Well, I'm working on another. Good luck on that. I've spend the day checking carefully through the manual and trying various import and export options. I think I have work-arounds for most of the issues I raised above. But some of the work-arounds are, frankly, a lot of work. One is to never intend shading domains for export; to, in fact, carefully never create a material tree for a model I intend to export. That way, I can use named groups of polygons instead (which import and export properly). Domains work fine for temporarily dividing a model for mapping, however. The weld trick works fine, but exporting the model then re-importing also fixes it so instead of multiple polymeshes you have only one. Duplicate with symmetry still reverses normals, but you can fix that before you combine the polymeshes into one. It also appears, due to the above and other issues, that duplication of any kind in the assembly room is not a good idea for a model you mean to export. This does mean, of course, that both the "widget" and the rumored nudge hotkey are not available. I am, however, pleased at how smoothly a Poser scene imports -- the addition of the alpha-map to the transparency makes that finally work properly (besides importing in the first place, which was a problem relying on the Poser mtl file).