When you export resources using Studio, the selected resource definitions and containers are exported regardless of whether they are locked or not. However, an export using Studio excludes the locking information in the exported CAR file metadata. If you want to preserve the lock status and ownership, you must export your resources using one of these methods:

The export CAR file contains all pertinent lock metadata. If you use the backup_import utility to import resources, and the CAR file contains lock metadata (evidenced by the presence of a file named resourcelocks.xml), the resources are restored with the locks intact. Importing from Studio menus brings in the resources but not the lock metadata.