I exported a texture from substance painter which has opacity I have no problems mapping them right on the network but its just the opacity where do I put it I tried in (transmission-weight) did not work
https://docs.arnoldrenderer.com/display/A5AFCUG/Geometry#Geometry-Opacity
Lee Griggs' page answers it, but the quick answer is "Cutout Opacity".
Alternatively, if you view the material in your attributes manager (not the shader graph), there's a tab for Alpha (stacking). You can plug in any shader used within the material, a specific image, or even another material to define the opacity. Typically, this is more power than I need and I just pipe it into the "Cutout Opacity" within the shader graph.
hey I'm so sorry but I still didn't understand this is what I am looking at I have mapped them all expect for opacity lost with where I plug this in
Cutout opacity
https://docs.arnoldrenderer.com/display/A5AFCUG/Geometry#Geometry-Opacity