*The reason I plugged into the Alternate_Diffuse channel was because I was of the understanding that it only passed on to PoserSurface what was plugged in, which made it a known entity.

*And that was correct, and you learned that accurately. What you plug into AD goes straight to the render. (Almost, there are exceptions, but we will reveal those later.)

As long as you have no Transparency active, AD is a pass-through to the render.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)