Continuing the discussion from Syncing My Library Playlists between Devices:
I have same issue. I usually prepare everything on my desktop just for the large screen and the fast speed. Everything for a while was syncing via the cloud to my MacBook Pro but after one of the updates it would completely wipe out my playlist on both devices. This is ver annoying. It appears that I now have two music folders with the djay folder in both. One is in my iCloud Drive and the other is on the actual hard drive on my desktop (a Mac mini running Monterrey) my MacBook Pro is on Big Sur but I am going to upgrade to Monterrey if it will work with my ten year old MacBook Pro to see if that resolves the issue. The music is all from various sources but consolidated into one folder on my iCloud Drive. I also have an iPad Pro and would also like all three to sync via iCloud.