Thanks for the possible solution. The problem with Apple's bugs is that they do not affect everyone in the same way. In other words, a new update comes out and people have all sorts of issues from the update. Handfuls of people have the same issues, but not everyone else does.
I have synched my iphone and ipad pro directly with my music library now and they still come out corrupted. Some albums have triplets of the same songs while there will only be the single song (correctly) within the same album(s).
In addition, so many albums are missing a large majority of the songs even though they remain in the albums that reside on the Mac itself. You go looking for a specific song on your iphone or ipad and you notice it's not available.
I don't even bother calling Apple anymore. They act as though no one knows how to do basic troubleshooting. Of course, not everyone knows how to do it and I'm not denigrating those folks, but when I tell Apple that I have already done what they are saying to do, I don't want to do it over again.
I'm currently looking for a high end music server/streamer for my audio system that I can load all of my music on to and then hopefully use that to transfer to my ipad/iphone.
Apple's bugs sometimes cause HUGE problems, and this is one of them since music is important to me and many other folks.
Cheers and good luck.