First thing first,
I obviously keep my tracks secure in the cloud.
As you do know, @paultaylor, I took some time to migrate my music locally, and spent quite some time fixing tracks.
I ran a duplicates finder job and it achieved yesterday.
Today I’m checking the results, and I can say it’s at least, unconvincing
this is just an extract, but as you can see songkong did delete stuff everywhere and I am now missing tracks in almost all my albums. randomly.
I guess my only option is now to re-snatch all my music from the cloud, back locally, and start all over again. trying to figure out what went wrong.
I send you the support files of my last duplicates run, as this is the one that most likely processed the extracts of above screenshots.