Can you please simplify adding objects to Cmasking_Mask > Manual selection?
At present, in order to add a group of objects, you must first create a new "named selection set" and then you can add it. It requires an unnecessary step of creating named selection sets for stuff you don't necessarily need in there. Much simpler, in my view, would be adding your current Max selection to the Cmasking list by pressing the + button.
Can you?
thanks,
m