When using Settings → Clone, Backup & Restore → NAS Backup & Restore to back up my A20’s internal drive to a NAS, the backup correctly identifies new files. But it does not detect changes or deletions made on the Aurender.

For example:

If I edit metadata or album artwork using the new Album Tag Editor (currently in beta), those edits are not written to the NAS on the next backup.

If I delete an album from the Aurender’s internal storage, that same album still remains on the NAS, forcing me to manually locate and delete it from the backup.

This means the NAS copy gradually becomes out of sync and all the work I do with the new tagging tools is essentially lost on the backup side.

Suggestion:

Please consider adding a “sync/mirror” option that:

Updates modified files on the NAS (based on timestamp or checksum)

Optionally removes deleted albums from the NAS

Shows a confirmation list before applying changes

This would keep the NAS backup aligned with the current library and make the new tagging tools fully useful.