diff --git a/server/internal/dao/engine.go b/server/internal/dao/engine.go
index 800f4b5..9337701 100644
--- a/server/internal/dao/engine.go
+++ b/server/internal/dao/engine.go
@@ -39,20 +39,10 @@ func Init() error {
 		return err
 	}
 
-	// 迁移旧数据 & 清理格式
-	migrateOldData()
-
 	// insert initial data if tables are empty
 	return initSeedData()
 }
 
-func migrateOldData() {
-	// 清理 owner_ids 中可能存在的空格
-	Engine.Exec("UPDATE application SET owner_ids = REPLACE(owner_ids, ' ', '') WHERE owner_ids LIKE '% %'")
-	// 清理 master_uids 中可能存在的空格
-	Engine.Exec("UPDATE business_group SET master_uids = REPLACE(master_uids, ' ', '') WHERE master_uids LIKE '% %'")
-}
-
 func initSeedData() error {
 	// check if profiles table is empty
 	count, err := Engine.Count(new(model.Profile))