I have checked the new .obj and the groups have modified names like abdomen bra (bra is the name of my model).So it looks like Poser is adding the name of the model at the end of each body group.But I have fixed those manully in NotePad so the names are ok now.
But now it get even worse!When I insert the model in the scene, everything is just as in the previous situation, only now my model is also invisible!I can select it, but I can't see it.And this happens in both Poser 5 and Poser 7.
I really don't know what to do anymore...