Has anyone here updated to iTunes 12.7 who has multiple iTunes music libraries? (in other words where you use option-open iTunes rather than just launch it?) and where some may use Apple Music and iCloud music library and some do not?
I have a bunch of different iTunes libraries -- to keep stuff like operas, sacred music, very old music, other "classical" works etc. separate from a "main" library that has a lot of different genres in it, and also separate from a library I use that has mostly just Apple Music in it and uses iCloud Music library but started out blank and to which I have added copies of relatively few of my purchased tracks.
All this separate libraries gig goes to facilitate managing the metadata differently and setting up the iTunes browser view that they call Songs view, i.e. the list view rather than all that artwork.
I also manage the location of the purchased music how I want to, in assorted folders inside the homedir's Music folder
Right now, when I option-open iTunes and select whatever of my assorted libraries I want to open, I always have to go into preferences and indicate whether I want to see AM or not, and turn on the iCloud library if I have opened an iTunes library that uses AM and iClould music library.
So, I am a little concerned wondering whether Apple has changed how any of that works. For sure I'm going to clone my drive and also make sure I have multiple Time Machine backups before switch up to 12.7. I back up my music folder to an external drive separately anyway but every time I let iTunes go to a higher version I get nervous wondering how many other people use multiple libraries and select one at app launch time. And throw in the Apple Music feature only being used in one of those libraries..