iTunes reverts edited ID3 tags
I edit a song's tag, and it reverts back to what it was, sometimes within seconds, sometimes after a while. If I edit the reverted tag again, sometimes it sticks, sometimes it doesn't. Also, editing one file's tags may cause other near-by files' tags to revert back! This happens only with some of the files, and they are matched aac files. (Though I cannot say for sure that it doesn't happen with mp3s as I have a very large collection)
Using iTunes 12.8.2.3 on High Sierra with iTunes Match, on a new iMac migrated from my MBP. The Media files reside on an external USB Drive.
After reading through similar complaints and suggestions (some dating back several years!) I've made sure that:
- File permissions for all nested folders within the iTunes folder are set to read & write for all users
- Airplay is off
- Machine is disconnected from wifi
Extremely frustrated because after days and days' worth of organizational work, the library is now in worse shape then when I started.
Thanks in advance for any suggestions you may have!
iMac 27" 5K, macOS 10.13