Answered: Is this a proper way to edit a mask?

Thane-

I applied a smart material to a large area. Some of the area i did not want covered by it. With DDO set to the albedo channel, i went into dynamask. But instead of painting on the model in 3DO, i simply painted the area i didn't want covered in photoshop on the mask psd. It seemed to carry over to the normal,roughness,metal, which is good, but i wanted to know if this could screw something up by not working exclusively in the Suite.

Synaesthesia

So long as you click Paint Mask in Photoshop, you should be fine. Otherwise your paint edits will be overwritten to the values in DynaMask the next time you edit the mask.