Deleted playlists in Music show up in sync window
There was an earlier thread that never got a final answer.
https://discussions.apple.com/thread/251032238
I can add that it appears the old playlist names, but no contents, are coming from the current Music Library. After deleting all my old music libraries, the playlist names still appear in the sync window. When I select them to sync, no music moves to my iPhone. When I create a new music library, with nothing in it, no song or playlist choices appear in the sync window.
iMac 27″, macOS 10.15