When I use the unit quick entry to enter advancement for scouts not in my den, it reports that it was successful, but the changes don’t actually appear to be made.
I suspect the issue is that the scouts in question are not in my den - if I make similar changes for scouts in my den, they seem to take effect.
I would expect that either it would let me mark the advancement, or at least give me an error message stating it wasn’t successful because i don’t have permission or something.