So I stupidly hit okay on using iCloud Music Library and now my music is all messed up and has incorrect art/etc. I've already done the fix to go back to an older version of the library, but it doesn't matter, the damage is done. As someone in another thread pointed out, iTunes actually went in and edited the metadata on every single song file. So now is the only fix to go in manually and fix everything yourself? And if you do, what will happen? Will iTunes just overwrite everything you did the next day? What's the best way to handle this broken library? (And remember, I've already restored to an older version, and many of my songs are still messed up).