gotcha j.. and actually.. it was me who made that quote earlier.  minus word from those who know better, all i can do is make my own suppositions.

now.. here's one for paolo or any others that may know.  I have been working on a texture set for hongyu's bikini.  to date, everything has worked as planned.  my trans maps makes what i want to be invisible invisible... bumps work, diffuse maps work.  yet my latest attempt renders just fine in test renders with 3delight.  when i pull up reality and then render in lux.. the grey areas of the trans maps seem to be working fine; but my full black sections are still showing up as you can see the black of the source mesh.