Actually that's not quite right; Bryce groups any meash parts with the same MATERIAL name attached to the same figure unless you tick the topmost box in the Poser .obj export dialogue. Since many props are textured with something called "Preview" they will be bunched together. If you have a figure with two props parented and two props not parented Bryce will read these four items as two meshes. It took me ages to work this out. Either you have to export the obj using exact figure names (in which case all body parts will be separate meshes, yuk) or you can change some of the material names using the grouping tool on Poser.