It happened a 2nd time but i learnt a lesson. I did have a backup .it file while i restored, but it didn't make a difference...
Maybie with locally important songs it would have not with Apple music offline songs..
oh well... another re-download then.. This is getting annoying.
I can understand keeping a backup, when it works, but it seems this is a big exception for offline music. Why ? A backup in that case is useless. I can understand Apple's view of it being toes to an account and that is fine for authentication, but you know its you doing it, that's when it becomes a problem..
The side of things that protect miss-use are also the same rules that break stuff from a genuine perspective as well.
This is one of those cases.
I actually tried this with some locally imported songs, just to see if the same would happen when *I* Force quit, and i could not reproduce the issue ... Then i figured, "there is probably a difference between a user force quitting a working app vs an app that is completely non-responsive anyway"
oh well. I'm sure i did everything correct...