diff --git a/frontend/src/app/modules/imports/components/action-modal/action-modal.component.html b/frontend/src/app/modules/imports/components/action-modal/action-modal.component.html
new file mode 100644
index 0000000000..905ab51c36
--- /dev/null
+++ b/frontend/src/app/modules/imports/components/action-modal/action-modal.component.html
@@ -0,0 +1,42 @@
+<div
+  class="modal-header"
+  [attr.data-qa]="modalData.headerDataQa"
+>
+  <h4 class="modal-title pull-left">{{ modalData.title }}</h4>
+  <button
+    type="button"
+    class="close pull-right"
+    aria-label="Close"
+    (click)="c()"
+  >
+    <span aria-hidden="true">&times;</span>
+  </button>
+</div>
+<div class="modal-body">
+  <p>{{ modalData.bodyMessage }}</p>
+  <p
+    *ngIf="modalData.additionalMessage"
+    class="attention-message"
+  >
+    {{ modalData.additionalMessage }}
+  </p>
+
+  <button
+    type="button"
+    (click)="c()"
+    mat-raised-button
+    class="mr-1"
+  >
+    {{ modalData.cancelButtonText || 'Annuler' }}
+  </button>
+
+  <button
+    type="button"
+    (click)="performAction()"
+    mat-raised-button
+    [color]="modalData.confirmButtonColor || 'primary'"
+    [attr.data-qa]="modalData.confirmButtonDataQa"
+  >
+    {{ modalData.confirmButtonText || 'Confirmer' }}
+  </button>
+</div>
diff --git a/frontend/src/app/modules/imports/components/action-modal/action-modal.component.scss b/frontend/src/app/modules/imports/components/action-modal/action-modal.component.scss
new file mode 100644
index 0000000000..52331cda3c
--- /dev/null
+++ b/frontend/src/app/modules/imports/components/action-modal/action-modal.component.scss
@@ -0,0 +1,4 @@
+.attention-message {
+  color: red;
+  font-weight: bold;
+}
diff --git a/frontend/src/app/modules/imports/components/action-modal/action-modal.component.ts b/frontend/src/app/modules/imports/components/action-modal/action-modal.component.ts
new file mode 100644
index 0000000000..1a0b03c110
--- /dev/null
+++ b/frontend/src/app/modules/imports/components/action-modal/action-modal.component.ts
@@ -0,0 +1,58 @@
+import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
+import { CommonService } from '@geonature_common/service/common.service';
+import { ImportDataService } from '../../services/data.service';
+import { Import } from '../../models/import.model';
+import { ModalData } from '../../models/modal-data.model';
+
+@Component({
+  selector: 'import-action-modal',
+  templateUrl: './action-modal.component.html',
+  styleUrls: ['./action-modal.component.scss'],
+})
+export class ModalActionImport implements OnInit {
+  @Input() data: Import; 
+  @Input() c: any;  
+  @Input() actionType: 'delete' | 'edit' = 'delete';
+  @Input() modalData: ModalData = {
+    title: 'Confirmation',
+    bodyMessage: 'Êtes-vous sûr de vouloir effectuer cette action ?',
+    additionalMessage: '',
+    cancelButtonText: 'Annuler',
+    confirmButtonText: 'Confirmer',
+    confirmButtonColor: 'warn',
+    headerDataQa: 'generic-modal-header',
+    confirmButtonDataQa: 'modal-confirm-action',
+  };
+  @Output() onAction = new EventEmitter<{ confirmed: boolean; actionType: string; data?: any }>();
+
+  constructor(
+    private _commonService: CommonService,
+    private _ds: ImportDataService
+  ) {}
+
+  ngOnInit() {}
+
+  // Méthode générique pour traiter les actions
+  performAction() {
+    if (this.actionType === 'delete') {
+      this.deleteImport();
+    } else if (this.actionType === 'edit') {
+      this.editImport();
+    }
+  }
+
+  // Supprimer l'import
+  deleteImport() {
+    this._ds.deleteImport(this.data.id_import).subscribe(() => {
+      this._commonService.translateToaster('success', 'Import.ImportStatus.DeleteSuccessfully');
+      this.onAction.emit({ confirmed: true, actionType: this.actionType, data: this.data });
+      this.c();
+    });
+  }
+
+  // Modifier l'import
+  editImport() {
+      this.onAction.emit({ confirmed: true, actionType: this.actionType, data: this.data });
+      this.c();
+  }
+}
diff --git a/frontend/src/app/modules/imports/components/delete-modal/delete-modal.component.html b/frontend/src/app/modules/imports/components/delete-modal/delete-modal.component.html
deleted file mode 100644
index 8766f11d0d..0000000000
--- a/frontend/src/app/modules/imports/components/delete-modal/delete-modal.component.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<div
-  class="modal-header"
-  data-qa="import-modal-delete"
->
-  <h4 class="modal-title pull-left">Suppression</h4>
-  <button
-    type="button"
-    class="close pull-right"
-    aria-label="Close"
-    (click)="c()"
-  >
-    <span aria-hidden="true">&times;</span>
-  </button>
-</div>
-<div class="modal-body">
-  <p>
-    Supprimer cet import associé au JDD "{{ row.dataset.dataset_name }}" et commencé le
-    {{ row.date_create_import }}?
-  </p>
-  <p *ngIf="row.date_end_import">Attention : cela supprimera aussi les données importées.</p>
-  <button
-    type="button"
-    (click)="c()"
-    mat-raised-button
-    class="mr-1"
-  >
-    Annuler
-  </button>
-
-  <button
-    type="button"
-    (click)="deleteImport()"
-    mat-raised-button
-    color="warn"
-    data-qa="modal-delete-validate"
-  >
-    Supprimer
-  </button>
-</div>
diff --git a/frontend/src/app/modules/imports/components/delete-modal/delete-modal.component.ts b/frontend/src/app/modules/imports/components/delete-modal/delete-modal.component.ts
deleted file mode 100644
index 029285b3c1..0000000000
--- a/frontend/src/app/modules/imports/components/delete-modal/delete-modal.component.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
-import { CommonService } from '@geonature_common/service/common.service';
-import { ImportDataService } from '../../services/data.service';
-import { TranslateService } from '@ngx-translate/core';
-import { Import } from '../../models/import.model';
-
-@Component({
-  selector: 'import-delete',
-  templateUrl: './delete-modal.component.html',
-})
-export class ModalDeleteImport implements OnInit {
-  @Input() row: Import;
-  @Input() c: any;
-  @Output() onDelete = new EventEmitter();
-  constructor(
-    private _commonService: CommonService,
-    private _ds: ImportDataService,
-    private translate: TranslateService
-  ) {}
-
-  ngOnInit() {}
-
-  deleteImport() {
-    this._ds.deleteImport(this.row.id_import).subscribe(() => {
-      this._commonService.translateToaster('success', 'Import.ImportStatus.DeleteSuccessfully');
-      this.onDelete.emit();
-      this.c();
-    });
-  }
-}
diff --git a/frontend/src/app/modules/imports/components/import_list/import-list.component.html b/frontend/src/app/modules/imports/components/import_list/import-list.component.html
index e69c7af8bf..eee5d7db8c 100644
--- a/frontend/src/app/modules/imports/components/import_list/import-list.component.html
+++ b/frontend/src/app/modules/imports/components/import_list/import-list.component.html
@@ -207,7 +207,7 @@ <h5 class="card-title">Liste des imports</h5>
                 mat-icon-button
                 color="primary"
                 class="Datatable__button"
-                (click)="onFinishImport(row)"
+                (click)="openModal(editModal, 'edit', row)"
                 [attr.data-qa]="'import-list-table-row-' + index + '-actions-edit'"
               >
                 <mat-icon>edit</mat-icon>
@@ -241,7 +241,7 @@ <h5 class="card-title">Liste des imports</h5>
                 mat-icon-button
                 color="warn"
                 class="Datatable__button"
-                (click)="openDeleteModal(row, deleteModal)"
+                (click)="openModal(deleteModal, 'delete', row)"
                 [matTooltip]="getTooltip(row, 'delete')"
                 [attr.data-qa]="'import-list-table-row-' + index + '-actions-delete'"
               >
@@ -258,17 +258,35 @@ <h5 class="card-title">Liste des imports</h5>
         data-qa="import-list-modal-destination"
       ></import-modal-destination>
 
+      <ng-template
+        #editModal
+        let-c="close"
+        let-d="dismiss"
+        data-qa="import-list-modal-edit"
+      >
+        <import-action-modal
+          [modalData]="editModalData"
+          [data]="selectedRow"
+          [actionType]="'edit'"
+          [c]="c"
+          (onAction)="handleModalAction($event)"
+        ></import-action-modal>
+      </ng-template>
+
+      <!-- Modale pour Delete -->
       <ng-template
         #deleteModal
-        let-c="close "
+        let-c="close"
         let-d="dismiss"
         data-qa="import-list-modal-delete"
       >
-        <import-delete
-          [row]="deleteOne"
+        <import-action-modal
+          [modalData]="deleteModalData"
+          [data]="selectedRow"
+          [actionType]="'delete'"
           [c]="c"
-          (onDelete)="onImportList(offset, search_string)"
-        ></import-delete>
+          (onAction)="handleModalAction($event)"
+        ></import-action-modal>
       </ng-template>
     </div>
   </div>
diff --git a/frontend/src/app/modules/imports/components/import_list/import-list.component.ts b/frontend/src/app/modules/imports/components/import_list/import-list.component.ts
index 2dfe14f1d2..f2d6564d38 100644
--- a/frontend/src/app/modules/imports/components/import_list/import-list.component.ts
+++ b/frontend/src/app/modules/imports/components/import_list/import-list.component.ts
@@ -1,6 +1,6 @@
 // @ts-ignore
 
-import { Component, OnInit, ViewChild } from '@angular/core';
+import { Component, OnInit, TemplateRef, ViewChild } from '@angular/core';
 import { Router } from '@angular/router';
 import { FormControl } from '@angular/forms';
 import { saveAs } from 'file-saver';
@@ -13,6 +13,7 @@ import { Import } from '../../models/import.model';
 import { ConfigService } from '@geonature/services/config.service';
 import { CsvExportService } from '../../services/csv-export.service';
 import { formatRowCount } from '../../utils/format-row-count';
+import { ModalData } from '../../models/modal-data.model';
 
 @Component({
   styleUrls: ['import-list.component.scss'],
@@ -22,7 +23,7 @@ export class ImportListComponent implements OnInit {
   public history;
   public filteredHistory;
   public empty: boolean = false;
-  public deleteOne: Import;
+  public selectedRow: Import;
   public interval: any;
   public search = new FormControl();
   public selectDestinationForm = new FormControl();
@@ -41,12 +42,14 @@ export class ImportListComponent implements OnInit {
   private destinationCode: string;
   public searchString: string = '';
 
+  public editModalData:ModalData;
+  public deleteModalData:ModalData;
   constructor(
     public _cruvedStore: CruvedStoreService,
     private _ds: ImportDataService,
     private _router: Router,
     private _commonService: CommonService,
-    private modal: NgbModal,
+    private _modalService: NgbModal,
     private importProcessService: ImportProcessService,
     public _csvExport: CsvExportService,
     public config: ConfigService
@@ -178,10 +181,51 @@ export class ImportListComponent implements OnInit {
     return formatRowCount(row);
   }
 
-  openDeleteModal(row: Import, modalDelete) {
-    this.deleteOne = row;
-    this._ds.setDestination(row.destination.code);
-    this.modal.open(modalDelete);
+  openModal(modalTemplate: TemplateRef<any>, actionType: 'edit' | 'delete', row: Import) {
+    this.selectedRow = row;
+      // Prépare les données de la modale en fonction de l'action
+      if (actionType === 'edit') {
+        let additionalMessage:string;
+        if(!!this.selectedRow.date_end_import) {
+          additionalMessage = 'Attention : Vous vous apprêtez à modifier un import terminé. Toute modification entraînera la suppression des données importées.'
+        } else {
+          additionalMessage = 'Attention : à chaque confirmation de chaque étape de cet import en cours , les données seront écrasées.'
+        }
+        this.editModalData = {
+          title: 'Modification',
+          bodyMessage: `Modifier cet import associé au JDD "${this.selectedRow.dataset.dataset_name}" et commencé le ${this.selectedRow.date_create_import}?`,
+          additionalMessage: additionalMessage,
+          cancelButtonText: 'Annuler',
+          confirmButtonText: 'Confirmer',
+          confirmButtonColor: 'warn',
+          headerDataQa: 'import-modal-edit',
+          confirmButtonDataQa: 'modal-edit-validate',
+        };  
+      } else if (actionType === 'delete') {
+        this._ds.setDestination(this.selectedRow.destination.code);
+        this.deleteModalData = {
+          title: 'Suppression',
+          bodyMessage: `Supprimer cet import associé au JDD "${row.dataset.dataset_name}" et commencé le ${row.date_create_import}?`,
+          additionalMessage: this.selectedRow.date_end_import
+            ? 'Attention : cela supprimera aussi les données importées.'
+            : '',
+          cancelButtonText: 'Annuler',
+          confirmButtonText: 'Supprimer',
+          confirmButtonColor: 'warn',
+          headerDataQa: 'import-modal-delete',
+          confirmButtonDataQa: 'modal-delete-validate',
+        };
+    }
+    this._modalService.open(modalTemplate);
+  }
+  handleModalAction(event: { confirmed: boolean; actionType: string; data?: any }) {
+    if (event.confirmed) {
+      if (event.actionType === 'edit') {
+        this.onFinishImport(event.data);
+      } else if (event.actionType === 'delete') {
+        this.onImportList({offset :this.offset, search: this.searchString});
+      }
+    }
   }
 
   onSort(e) {
diff --git a/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.html b/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.html
index c6b05dbc67..6e095c3e7f 100644
--- a/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.html
+++ b/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.html
@@ -264,7 +264,7 @@ <h5 class="card-title mb-0">Correspondance des nomenclatures</h5>
         <button
           class="btn btn-success box-shadow d-flex justify-content-center align-content-between"
           [disabled]="!isNextStepAvailable()"
-          (click)="onNextStep()"
+          (click)="checkBeforeNextStep()"
           mat-raised-button
           color="primary"
           data-qa="import-contentmapping-model-validate"
@@ -456,3 +456,17 @@ <h5 class="card-title mb-0">Correspondance des nomenclatures</h5>
     </button>
   </div>
 </ng-template>
+<ng-template
+  #editModal
+  let-c="close"
+  let-d="dismiss"
+  data-qa="import-list-modal-edit"
+>
+  <import-action-modal
+    [modalData]="modalData"
+    [data]="importData"
+    [actionType]="'edit'"
+    [c]="c"
+    (onAction)="handleModalAction($event)"
+  ></import-action-modal>
+</ng-template>
diff --git a/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.ts b/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.ts
index 534b7a784e..7fdeea39ad 100644
--- a/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.ts
+++ b/frontend/src/app/modules/imports/components/import_process/content-mapping-step/content-mapping-step.component.ts
@@ -1,4 +1,4 @@
-import { Component, OnInit, ViewChild, ViewEncapsulation } from '@angular/core';
+import { Component, OnInit, TemplateRef, ViewChild, ViewEncapsulation } from '@angular/core';
 import { Router, ActivatedRoute } from '@angular/router';
 import { Validators } from '@angular/forms';
 import { FormControl, FormGroup, FormBuilder } from '@angular/forms';
@@ -18,6 +18,7 @@ import { Step } from '../../../models/enums.model';
 import { Import, ImportValues, Nomenclature } from '../../../models/import.model';
 import { ImportProcessService } from '../import-process.service';
 import _ from 'lodash';
+import { ModalData } from '@geonature/modules/imports/models/modal-data.model';
 
 @Component({
   selector: 'content-mapping-step',
@@ -41,11 +42,12 @@ export class ContentMappingStepComponent implements OnInit {
   public renameMappingFormVisible: boolean = false;
   public mappedFields: Set<string> = new Set<string>(); // TODO
   public unmappedFields: Set<string> = new Set<string>(); // TODO
+  public modalData:ModalData;
 
   @ViewChild('modalConfirm') modalConfirm: any;
   @ViewChild('modalRedir') modalRedir: any;
   @ViewChild('deleteConfirmModal') deleteConfirmModal: any;
-
+  @ViewChild('editModal') editModal: TemplateRef<any>;
   constructor(
     //private stepService: StepsService,
     private _fb: FormBuilder,
@@ -57,7 +59,8 @@ export class ContentMappingStepComponent implements OnInit {
     private _route: ActivatedRoute,
     private _modalService: NgbModal,
     public cruvedStore: CruvedStoreService,
-    private importProcessService: ImportProcessService
+    private importProcessService: ImportProcessService,
+
   ) {}
 
   ngOnInit() {
@@ -307,4 +310,36 @@ export class ContentMappingStepComponent implements OnInit {
     }
     return values;
   }
+
+    checkBeforeNextStep(){
+      if (this.importData?.contentmapping) {
+         this.openModal(this.editModal);
+          return;
+        }
+        else{
+          this.onNextStep();
+        }
+    }
+    
+    openModal(editModal: TemplateRef<any>) {
+      this.modalData = {
+        title: 'Modification',
+        bodyMessage:'Des modifications ont été apportées à la correspondances des nomenclatures. L\'ancienne correspondance des nomenclatures sera supprimé.',
+        additionalMessage: 'Etes-vous sur de continuer ?',
+        cancelButtonText: 'Annuler',
+        confirmButtonText: 'Confirmer',
+        confirmButtonColor: 'warn',
+        headerDataQa: 'import-modal-edit',
+        confirmButtonDataQa: 'modal-edit-validate',
+      };  
+      this._modalService.open(editModal);
+    }
+  
+    handleModalAction(event: { confirmed: boolean; actionType: string; data?: any }) {
+      if (event.confirmed) {
+        if (event.actionType === 'edit') {
+          this.onNextStep();
+        }
+      }
+    }
 }
diff --git a/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.html b/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.html
index 9e18b1af59..d72b3155a5 100644
--- a/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.html
+++ b/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.html
@@ -101,7 +101,7 @@ <h5 class="card-title mb-0">{{ 'Import.FieldMapping.Title' | translate }}</h5>
             mat-raised-button
             color="primary"
             [disabled]="!isNextStepAvailable()"
-            (click)="onNextStep()"
+            (click)="checkBeforeNextStep()"
             data-qa="import-new-fieldmapping-model-validate"
           >
             {{ 'Import.Next' | translate }}
@@ -216,4 +216,19 @@ <h5 class="card-title mb-0">{{ 'Import.FieldMapping.Title' | translate }}</h5>
       </button>
     </div>
   </ng-template>
+
+  <ng-template
+    #editModal
+    let-c="close"
+    let-d="dismiss"
+    data-qa="import-list-modal-edit"
+  >
+    <import-action-modal
+      [modalData]="modalData"
+      [data]="importData"
+      [actionType]="'edit'"
+      [c]="c"
+      (onAction)="handleModalAction($event)"
+    ></import-action-modal>
+  </ng-template>
 </div>
diff --git a/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.ts b/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.ts
index e07236f264..682f3465c7 100644
--- a/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.ts
+++ b/frontend/src/app/modules/imports/components/import_process/fields-mapping-step/fields-mapping-step.component.ts
@@ -1,4 +1,4 @@
-import { Component, OnInit, ViewChild } from '@angular/core';
+import { Component, OnInit, TemplateRef, ViewChild } from '@angular/core';
 import { ImportDataService } from '../../../services/data.service';
 import { FieldMappingService } from '@geonature/modules/imports/services/mappings/field-mapping.service';
 import { Cruved, toBooleanCruved } from '@geonature/modules/imports/models/cruved.model';
@@ -17,6 +17,7 @@ import {
 import { ConfigService } from '@geonature/services/config.service';
 import { FormControl } from '@angular/forms';
 import { AuthService } from '@geonature/components/auth/auth.service';
+import { ModalData } from '@geonature/modules/imports/models/modal-data.model';
 
 @Component({
   selector: 'pnx-fields-mapping-step',
@@ -25,6 +26,7 @@ import { AuthService } from '@geonature/components/auth/auth.service';
 })
 export class FieldsMappingStepComponent implements OnInit {
   @ViewChild('saveMappingModal') saveMappingModal;
+  @ViewChild('editModal') editModal: TemplateRef<any>;
   public targetFields;
   public sourceFields: Array<string> = [];
   public isReady: boolean = false;
@@ -34,7 +36,7 @@ export class FieldsMappingStepComponent implements OnInit {
   public step: Step;
   public modalCreateMappingForm = new FormControl('');
   public defaultValueFormDefs: any = {};
-
+  public modalData:ModalData;
   constructor(
     public _fieldMappingService: FieldMappingService,
     private _route: ActivatedRoute,
@@ -276,4 +278,37 @@ export class FieldsMappingStepComponent implements OnInit {
   getUnmappedFields() {
     return this._fieldMappingService.getUnmappedFields();
   }
+
+  checkBeforeNextStep(){
+      if (this.importData?.fieldmapping) {
+         this.openModal(this.editModal);
+          return;
+        }
+        else{
+          this.onNextStep();
+        }
+    }
+
+    openModal(editModal: TemplateRef<any>) {
+      this.modalData = {
+        title: 'Modification',
+        bodyMessage: 'Des modifications ont été apportées à la correspondances des champs. L\'ancienne correspondance des champs sera supprimée',
+        additionalMessage: 'Etes-vous sur de continuer ?',
+        cancelButtonText: 'Annuler',
+        confirmButtonText: 'Confirmer',
+        confirmButtonColor: 'warn',
+        headerDataQa: 'import-modal-edit',
+        confirmButtonDataQa: 'modal-edit-validate',
+      };  
+      this._modalService.open(editModal);
+    }
+
+    handleModalAction(event: { confirmed: boolean; actionType: string; data?: any }) {
+      if (event.confirmed) {
+        if (event.actionType === 'edit') {
+          this.onNextStep();
+        }
+      }
+    }
+  
 }
diff --git a/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.html b/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.html
index 51a29f10a2..e5d05ebcbf 100644
--- a/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.html
+++ b/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.html
@@ -156,7 +156,7 @@ <h5 class="card-title mb-0">
         <button
           *ngIf="nValidData > 0 && !importDone && errorIsNotImport"
           class="d-flex justify-content-center align-content-between button-success"
-          (click)="onImport()"
+          (click)="checkBeforeNextStep()"
           mat-raised-button
           data-qa="import-new-execute-start"
         >
@@ -256,3 +256,17 @@ <h5 class="card-title">
     </button>
   </div>
 </ng-template>
+<ng-template
+  #editModal
+  let-c="close"
+  let-d="dismiss"
+  data-qa="import-list-modal-edit"
+>
+  <import-action-modal
+    [modalData]="modalData"
+    [data]="importData"
+    [actionType]="'edit'"
+    [c]="c"
+    (onAction)="handleModalAction($event)"
+  ></import-action-modal>
+</ng-template>
diff --git a/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.ts b/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.ts
index 8f637eae16..407994e677 100644
--- a/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.ts
+++ b/frontend/src/app/modules/imports/components/import_process/import-step/import-step.component.ts
@@ -1,4 +1,4 @@
-import { Component, OnInit, ViewChild } from '@angular/core';
+import { Component, OnInit, TemplateRef, ViewChild } from '@angular/core';
 import { Router, ActivatedRoute } from '@angular/router';
 import { ImportProcessService } from '../import-process.service';
 import { ImportDataService } from '../../../services/data.service';
@@ -8,6 +8,8 @@ import { Import, ImportPreview } from '../../../models/import.model';
 import { ConfigService } from '@geonature/services/config.service';
 import { CsvExportService } from '../../../services/csv-export.service';
 import { ImportStepComponentsError } from './import-step.component-errors';
+import { ModalData } from '@geonature/modules/imports/models/modal-data.model';
+import { NgbModal } from '@librairies/@ng-bootstrap/ng-bootstrap';
 
 @Component({
   selector: 'import-step',
@@ -31,9 +33,10 @@ export class ImportStepComponent implements OnInit {
   public errorStatus: ImportStepComponentsError = ImportStepComponentsError.NONE;
   private timeout: number = 100;
   private runningTimeout: any;
+  public modalData:ModalData; 
 
   @ViewChild('modalRedir') modalRedir: any;
-
+  @ViewChild('editModal') editModal: TemplateRef<any>;
   constructor(
     private importProcessService: ImportProcessService,
     private _router: Router,
@@ -41,7 +44,8 @@ export class ImportStepComponent implements OnInit {
     private _ds: ImportDataService,
     private _commonService: CommonService,
     public _csvExport: CsvExportService,
-    public config: ConfigService
+    public config: ConfigService,
+    private _modalService: NgbModal,
   ) {}
 
   //
@@ -193,4 +197,36 @@ export class ImportStepComponent implements OnInit {
   onRedirect() {
     this._router.navigate([this.config.IMPORT.MODULE_URL]);
   }
+
+  checkBeforeNextStep(){
+        if (!!this.importData?.date_end_import) {
+           this.openModal(this.editModal);
+            return;
+          }
+          else{
+            this.onImport();
+          }
+  }
+  
+  openModal(editModal: TemplateRef<any>) {
+        this.modalData = {
+          title: 'Modification',
+          bodyMessage: 'Des données ont déjà été importées. Si vous continuez ces dernières seront supprimées.',
+          additionalMessage: 'Etes-vous sur de continuer ?',
+          cancelButtonText: 'Annuler',
+          confirmButtonText: 'Confirmer',
+          confirmButtonColor: 'warn',
+          headerDataQa: 'import-modal-edit',
+          confirmButtonDataQa: 'modal-edit-validate',
+        };  
+        this._modalService.open(editModal);
+  }
+  
+  handleModalAction(event: { confirmed: boolean; actionType: string; data?: any }) {
+        if (event.confirmed) {
+          if (event.actionType === 'edit') {
+            this.onImport();
+          }
+        }
+  }
 }
diff --git a/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.html b/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.html
index de00e46965..5b0bd7beee 100644
--- a/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.html
+++ b/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.html
@@ -79,7 +79,7 @@ <h5 class="card-title mb-0">{{ 'Import.FileUpload' | translate }}</h5>
         mat-raised-button
         color="primary"
         [disabled]="!isNextStepAvailable()"
-        (click)="onNextStep()"
+        (click)="checkBeforeNextStep()"
         id="validate"
         data-qa="import-new-upload-validate"
       >
@@ -101,3 +101,17 @@ <h5 class="card-title mb-0">{{ 'Import.FileUpload' | translate }}</h5>
     [strokeWidth]="12"
   ></mat-spinner>
 </div>
+<ng-template
+  #editModal
+  let-c="close"
+  let-d="dismiss"
+  data-qa="import-list-modal-edit"
+>
+  <import-action-modal
+    [modalData]="modalData"
+    [data]="importData"
+    [actionType]="'edit'"
+    [c]="c"
+    (onAction)="handleModalAction($event)"
+  ></import-action-modal>
+</ng-template>
diff --git a/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.ts b/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.ts
index 9cb702b5b9..88578cf008 100644
--- a/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.ts
+++ b/frontend/src/app/modules/imports/components/import_process/upload-file-step/upload-file-step.component.ts
@@ -1,4 +1,4 @@
-import { Component, OnInit } from '@angular/core';
+import { Component, OnInit, TemplateRef, ViewChild } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
 import { Observable } from 'rxjs';
 import { ImportDataService } from '../../../services/data.service';
@@ -8,6 +8,8 @@ import { Step } from '../../../models/enums.model';
 import { Destination, Import } from '../../../models/import.model';
 import { ImportProcessService } from '../import-process.service';
 import { ConfigService } from '@geonature/services/config.service';
+import { NgbModal } from '@librairies/@ng-bootstrap/ng-bootstrap';
+import { ModalData } from '@geonature/modules/imports/models/modal-data.model';
 
 @Component({
   selector: 'upload-file-step',
@@ -15,6 +17,8 @@ import { ConfigService } from '@geonature/services/config.service';
   templateUrl: 'upload-file-step.component.html',
 })
 export class UploadFileStepComponent implements OnInit {
+ 
+  @ViewChild('editModal') editModal!: TemplateRef<any>;
   public step: Step;
   public importData: Import;
   public uploadForm: FormGroup;
@@ -27,6 +31,7 @@ export class UploadFileStepComponent implements OnInit {
   public maxFileNameLength: number = 255;
   public acceptedExtensions: string = null;
   public destination: Destination = null;
+  public modalData:ModalData;
 
   constructor(
     private ds: ImportDataService,
@@ -34,7 +39,8 @@ export class UploadFileStepComponent implements OnInit {
     private fb: FormBuilder,
     private importProcessService: ImportProcessService,
     private route: ActivatedRoute,
-    public config: ConfigService
+    public config: ConfigService,
+    private modal: NgbModal
   ) {
     this.acceptedExtensions = this.config.IMPORT.ALLOWED_EXTENSIONS.toString();
     this.maxFileSize = this.config.IMPORT.MAX_FILE_SIZE;
@@ -102,6 +108,7 @@ export class UploadFileStepComponent implements OnInit {
       return this.ds.addFile(this.uploadForm.get('dataset').value, this.file);
     }
   }
+  
   onNextStep() {
     if (this.uploadForm.pristine) {
       this.importProcessService.navigateToNextStep(this.step);
@@ -128,4 +135,37 @@ export class UploadFileStepComponent implements OnInit {
       }
     );
   }
+
+  checkBeforeNextStep(){
+    if (this.importData?.fieldmapping) {
+       this.openModal(this.editModal);
+        return;
+      }
+      else{
+        this.onNextStep();
+      }
+  }
+  
+  openModal(editModal: TemplateRef<any>) {
+    this.modalData = {
+      title: 'Modification',
+      bodyMessage:'Le fichier existant en base de données sera supprimé !',
+      additionalMessage: 'Etes-vous sur de continuer ?',
+      cancelButtonText: 'Annuler',
+      confirmButtonText: 'Confirmer',
+      confirmButtonColor: 'warn',
+      headerDataQa: 'import-modal-edit',
+      confirmButtonDataQa: 'modal-edit-validate',
+    };  
+    this.modal.open(editModal);
+  }
+
+  handleModalAction(event: { confirmed: boolean; actionType: string; data?: any }) {
+    if (event.confirmed) {
+      if (event.actionType === 'edit') {
+        this.onNextStep();
+      }
+    }
+  }
+
 }
diff --git a/frontend/src/app/modules/imports/imports.module.ts b/frontend/src/app/modules/imports/imports.module.ts
index 46e0c25747..cc0dbb77c5 100644
--- a/frontend/src/app/modules/imports/imports.module.ts
+++ b/frontend/src/app/modules/imports/imports.module.ts
@@ -9,7 +9,6 @@ import { MatCheckboxModule } from '@angular/material/checkbox';
 import { NgChartsModule } from 'ng2-charts';
 
 import { ImportModalDestinationComponent } from './components/modal_destination/import-modal-destination.component';
-import { ModalDeleteImport } from './components/delete-modal/delete-modal.component';
 import { ImportDataService } from './services/data.service';
 import { CsvExportService } from './services/csv-export.service';
 import { FieldMappingService } from './services/mappings/field-mapping.service';
@@ -35,6 +34,7 @@ import { Step } from './models/enums.model';
 import { ImportReportComponent } from './components/import_report/import_report.component';
 import { DestinationsComponent } from './components/destinations/destinations.component';
 import { FieldMappingModalComponent } from './components/import_process/fields-mapping-step/field-mapping-modal/field-mapping-modal.component';
+import { ModalActionImport } from './components/action-modal/action-modal.component';
 
 const routes: Routes = [
   { path: '', component: ImportListComponent },
@@ -97,7 +97,7 @@ const routes: Routes = [
     ImportListComponent,
     ImportErrorsComponent,
     ImportModalDestinationComponent,
-    ModalDeleteImport,
+    ModalActionImport,
     UploadFileStepComponent,
     DecodeFileStepComponent,
     FieldsMappingStepComponent,
@@ -126,7 +126,7 @@ const routes: Routes = [
     MatCheckboxModule,
     NgbModule,
   ],
-  entryComponents: [ModalDeleteImport],
+  entryComponents: [ModalActionImport],
   providers: [
     ImportDataService,
     ImportProcessService,
diff --git a/frontend/src/app/modules/imports/models/modal-data.model.ts b/frontend/src/app/modules/imports/models/modal-data.model.ts
new file mode 100644
index 0000000000..fbbd863a41
--- /dev/null
+++ b/frontend/src/app/modules/imports/models/modal-data.model.ts
@@ -0,0 +1,11 @@
+export interface ModalData {
+    title: string; // Titre de la modal
+    bodyMessage: string; // Message principal de la modal
+    additionalMessage?: string; // Message supplémentaire (optionnel)
+    cancelButtonText?: string; // Texte du bouton Annuler (optionnel)
+    confirmButtonText?: string; // Texte du bouton Confirmer (optionnel)
+    confirmButtonColor?: 'primary' | 'accent' | 'warn'; // Couleur du bouton Confirmer (optionnel)
+    headerDataQa?: string; // Attribut `data-qa` pour le header de la modal (optionnel)
+    confirmButtonDataQa?: string; // Attribut `data-qa` pour le bouton Confirmer (optionnel)
+  }
+  
\ No newline at end of file