I was just learning Trans Maps over the weekend (I'm new to poser folks) and this confused me to no end till I figured out it was ok in the renders despite looking all wrong in the work document. Problem was that it often looks the same in the work document even if you've miss set your trans mapping info. I had several renders that had a black shadow over the area that was supposed to be transparent. I eventually figured out how to set the dials. But it was a pain learning this when my preview didn't show any difference either way.

Truth has no value without backing by unfounded belief.
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