diff --git a/app/importer/server/classes/ImportDataConverter.ts b/app/importer/server/classes/ImportDataConverter.ts
index 95d79f36df46..4bfa7ac5b46f 100644
--- a/app/importer/server/classes/ImportDataConverter.ts
+++ b/app/importer/server/classes/ImportDataConverter.ts
@@ -263,7 +263,7 @@ export class ImportDataConverter {
 		}
 
 		if (userData.importIds.length) {
-			this.addUserToCache(userData.importIds[0], existingUser._id, existingUser.username);
+			this.addUserToCache(userData.importIds[0], existingUser._id, existingUser.username || userData.username);
 		}
 	}