Disappearing ratings (Music)
I lost about 90% of my ratings in Music. Even after I restore my backed up 'Music Library' the ratings are visible at first but disappear after about 15 seconds.
Help ... I put a considerable amount of effort in getting most of my songs rated.
I'm on macOS Catalina 10.15.5 (ie fully up-to-date) with a iTunes Match.
Mac Pro