Apple Music artwork scrambled on iPhone after upgrade

This question is about apple music.

I have both a MacBook pro and an iphone 16 (upgraded from an iphone 13). The mac runs Sequoia 15.6.1. I use the mac as the master storage file for my music and sync the music to the iphone. I would make music additions to the mac and then sync any changes to the iphone. When I upgraded to the 16 from a 13 I used Apple's side by side transfer to upload all my files to the iphone 16. This worked well with the exception that all of the artwork associated with each song on the phone has been scrambled. The images are intact, they just done match the song now. The artwork on the mac remains correct for each song. Syncing the phone to the mac has no effect on the artwork on phone. The images remain scrambled. I tried deleting some music from the phone but when I then synced to the mac the operation also deleted the same music from the mac so it also appears that the iphone is now the master source for music.

I would like to set the mac as the master file and correct the artwork mixing. Thank you in advance.