I had three maintenance schedules applied to a top level USM group that applied to all my child groups and thus devices. I had one child group that I did not want two of those maintenance schedules applied to so I went to that USM group and deleted the two of concern.
The problem is this not only removed those two schedules from that USM group but remove those two schedules from all parent and child USM groups globally.
This to me does not seem like a logical workflow from an administrators perspective. Have I overlooked some tidbit of information to prevent this undesired behavior?