Thanks for the responses guys.   @Carlosan that doesn't work with Imported NormalMaps unfortunately.  This is very much linked to an earlier post I made where I was requesting the ability to paint depth in an Opaque manner above an imported Normal Map Layer.  Currently it doesn't work. @Javis, yes with Imported NormalMaps the clip masking doesn't work.  So you managed to mask a NormalMap layer using a Layer with an RGB Layer?   I believe that possibly Andrew needs to hav