Marvis updates my play counts and last played, but I don't use iCloud Music Library I sync the ol' fashioned way.Do you know if Marvis does that?
Is anyone else having trouble with Marvis not keeping rating changes? Not always, but I rated a complete album via Marvis and when I re-synced none of those ratings transferred to my library (but the play history did). Many times ratings will sync, but I've seen it not remember a rating even before I re-sync (rate a song, then on the next song back up to the one you rated or re-rated and the rating did not "stick"). I started seeing this on iOS 10.0.3 and now on 10.1, but not consistently.