Unable to remove "Does this shift require training?" flags

[IzKen]

I've tried this multiple times and we can't remove the Medical flag on the "BAMF - Volunteer" shifts. It saves, resets all those who have signed up, but the flag is still set.

The only workaround is to delete and recreate shifts and this needs to be done for about a dozen shifts the way BAMF set them up. Then have to manually reassign users.