Mac Music (itunes) lost all my Playlists on Jan 30th ... now empty

I resolved my own issue. Here is the link I used.

Empty/corrupt iTunes library after upgrad… - Apple Community

Here are the instructions I used:

"In macOS 10.15 Catalina and later the Music Library.musiclibrary file is a package that contains equivalents for the library files that would previously have been in the iTunes folder. Internally there is a file called Library.musicdb, which would appear to be the real analog to the .itl file. Music creates Temp File.tmp files within the .musiclibrary package when updating the library, so it is possible that in a corrupted library there will be a .tmp file that can be restored if you right click on Music Library.musiclibrary and Show Package Contents. If restoring a .musiclibrary package from Time Machine you should option-start Music and explicitly select the restored file."

I copied the Library.Musicdb file and pasted to the active MusicLibrary file. Then I restarted Music (iTunes holding down SHIFT and OPTION) and selected that updated file.

All my Playlists are now restored though the library needs a small update. Sadly I don't know how to do this other than add to library which for some ridiculous reason duplicates every song in my library. Now I need to delete all music and reload losing my Recently Added history. Apple this is absurd!!!

I thought I resolved my own issue however I get "The Music Library file cannot be saved. An unknown error occurred (13010)." All my Playlists are currently restored, however, I still have this ERROR. I expect it will fail again with a week or two like last time. Please HELP!!!!