Why does Apple Music repoint songs in my personal library?

I had the album "Taru" by Lee Morgan added to my personal library. When I went to listen to it today, songs were missing. I found the missing tracks in my library under a compilation album called "Late Night With Lee Morgan." I checked, and the complete "Taru" album is still available; so why did the software need to modify my personal library?

This is not the first time it's happened. I have noticed it numerous other times in the past. Based on this experience, it seems when Apple adds new items to it's catalog there is a potential for it to repoint songs that have been added to our personal library and which are still available from the original source. This is very frustrating and unacceptable! It's a huge bug in the software, in my opinion.

Unfortunately, I've had nothing but aggravating experiences with Apple support in the past and so I've been hesitant to try and report the issue.