I don't know if anyone else has stumbled (or posted) on a solution from keeping the figures from going bald during the prerender portion of posing a character with hairstyles that require transparency maps (or how to save a reasonably looking hair or prop resource file) without constantly fiddling with the transparency settings. For those of you who find vanishing hair a little visually disturbing when posing your figures, here's the trick. Select hair (or the transparent prop) and select element styles and set the style to cartoon. The hair will remain visible during posing, and still render transparently.