Apple Music - playlist problems

Hello -

All of my playlists are empty.

I am moving my music library from a older mac mini to a new mac mini M2. I created a new library, and imported the songs into it. The new library is synced with my apple ID and it downloaded all of the playlists from my old version, but they are all empty. I have hard copies of almost all of the songs for use off-line

I have tried moving individual playlists from itunes on the old mac to Music on the new mini but these also show up as empty.

I have tried .txt and .xml versions with no luck

I have created test playlists from the new library, exported them, and then re-imported them also with no luck.

Could the size of library be the issue? There are 60,000+ songs, and about 200 playlists, I have a very slow internet connection and Music is sloooowly updating to the Cloud Music library.

Thank you