Ndeitmers

Hi, I am fairly new to 3D Coat but very experienced with Photoshop (as is everyone I guess). After trying to get "discard clip masked pixels" to work I decided to ask the community for help, to find out that this has been a nkown issue for years? Since adding and subtracting layer masks is the bread and butter for a clean workflow I am quite surprised to see this. I wonder what the reason is. Is there a better workflow for this? Let's say I have to overlapping layer masks and I would like to create a new mask for the visible pixels on the bottom layer. How would I do that?