I have PerfectTunes 3.1 (fully registered) and recently when I update ID Tags, the changes are not being saved. I have an M1 MacBook Pro now running MacOS 13.2 (but I was having this problem before the most recent update).

When I save the changes, the page in PerfectTunes seems to update:
Screenshot 21-1-23 at 22.25.jpg
But when I go back in a couple of days later, the updates to Album/Artist & Artwork have disappeared:
Screenshot 25-1-23 at 20.13.jpg

My music library is held on a Synology 218+ NAS running Asset UPnP v 7.5.