diff --git a/server/migrations.js b/server/migrations.js
index 9c90d8768..19425049b 100644
--- a/server/migrations.js
+++ b/server/migrations.js
@@ -1161,6 +1161,7 @@ Migrations.add('migrate-attachments-collectionFS-to-ostrioFiles', () => {
             cardId: fileObj.cardId,
             listId: fileObj.listId,
             swimlaneId: fileObj.swimlaneId,
+            source: 'import,'
           },
           userId,
           size: fileSize,