Hmph. Back when I was trying to use Amorphium for Poser morphs I gave up on trying to keep scale. Most of the time I work at a comfortable scale in Carrara, export, import to Poser at "percent figure size" and tweak it back into position in a wireframe ortho view. I've gotten very fast at this and it doesn't bother me anymore. Of course, if it's something like touching up a UV map or cleaning up one stray vert I'll put up with working at Poser scale.