diff --git a/src/structures/services/structures-import.service.ts b/src/structures/services/structures-import.service.ts
index 82cae599452ad24534940e195118ab6b3842c3a3..b68955ade3c0ecf12f695a9dc5cf0caac7a8ad6d 100644
--- a/src/structures/services/structures-import.service.ts
+++ b/src/structures/services/structures-import.service.ts
@@ -11,11 +11,12 @@ import { Week } from '../../shared/schemas/week.schema';
 import { Day } from '../schemas/day.schema';
 import { Time } from '../schemas/time.schema';
 import { DataGouvStructure } from '../interfaces/data-gouv-structure.interface';
-
 interface Condition {
   address?: { street?: string; numero?: string };
   contactMail?: string;
 }
+// historically, contactMail has been set to an empty string when a structure is deleted
+type ContactMailCondition = string | { $in: (string | null)[] };
 
 @Injectable()
 export class StructuresImportService {
@@ -87,8 +88,15 @@ export class StructuresImportService {
       addressCondition = { 'address.street': structure.adresse };
     }
 
-    const conditions: Condition[] = [addressCondition, { contactMail: structure.courriel }];
+    const contactMailCondition: { contactMail: ContactMailCondition } = { contactMail: structure.courriel };
+
+    if (!structure.courriel) {
+      contactMailCondition.contactMail = { $in: [null, ''] };
+    }
+
+    const conditions: Condition[] = [addressCondition, contactMailCondition];
     const count = await this.structureModel.countDocuments({ $and: conditions }).exec();
+
     return count > 0;
   }
 
diff --git a/src/structures/services/structures.service.ts b/src/structures/services/structures.service.ts
index 180005f6fadaa47179d7d5b0fbe266c513e4712d..69ad57271435a42fa40c2dbaa9f3c270df27b815 100644
--- a/src/structures/services/structures.service.ts
+++ b/src/structures/services/structures.service.ts
@@ -745,7 +745,7 @@ export class StructuresService {
     structure.structureType = null;
     if (structure.toBeDeletedAt) structure.toBeDeletedAt = null;
     structure.deletedAt = DateTime.local().setZone('Europe/Paris').toString();
-    this.anonymizeStructure(structure).save();
+    structure.save();
     this.logger.debug(`delete structure : ${structure.structureName} (${structure._id})`);
 
     // Remove structure from owners (and check if there is a newly unattached user)
@@ -789,16 +789,6 @@ export class StructuresService {
     this.mailerService.send(uniqueAdminEmails, jsonConfig.subject, html);
   }
 
-  private anonymizeStructure(structure: StructureDocument): StructureDocument {
-    structure.contactPhone = '';
-    structure.contactMail = '';
-    structure.facebook = null;
-    structure.twitter = null;
-    structure.instagram = null;
-    structure.website = '';
-    return structure;
-  }
-
   @Cron(CronExpression.EVERY_DAY_AT_4AM)
   public async structuresTasksProcess(): Promise<void> {
     this.logger.log('structuresTasksProcess');