songs removed from playlists
12.3.3.17 has been a disaster. I have songs being wiped from my playlists (songs I ripped). I have playlist folders that, when I view the folder as "Albums", shows individual songs, not in playlists, as an album (in a playlist folder). I have had to turn off iOS sharing for iTunes; that appears to be what is rewriting my playlists (a pain since I can't listen to my playlists on my iPhone). I have had to rebuild many playlists, and I have no confidence my playlists will survive.
Am I missing a setting, or is 12.3.3.17 just the worst version of iTunes yet?
And will Apple Support delete this post as they did my previous one? Are they interested in fixing this software so it's not a huge frustration?
MacBook Pro, OS X El Capitan (10.11.2)