I think the only way you are going to be able to use the figure as you intended is to create 3 separate figures.

I don't think Poser's library is sophisticated enough to handle the alt geometry I the way you want it to.

The mask model, on my PC, works OK, and it has alternate geometry on the 2 parts 'mask' and 'hemisphere'. The bug is :: if I select any alternate geometry choices, even if only temporarily, during that Poser run, and then save the model to library as a character, then in that saved .CR2 file, the descriptions of the alternate geometries that I selected during that run, save with their geometry file addresses as absolute form starting with C: , whereas I would prefer relative form starting with :Runtime: