The trouble is that C4D reorders the vertices when you import an obj-file, that is why it explodes when you bring it back into Poser. One way to maybe solve it is to export a 3ds-file from Poser into C4D. I haven't tried it myself, but I've read other posts about it. Another is to use UV Mapper Pro ( the free version doesn't work) to reorder the vertices after you've made your morph in C4D. There used to be a plug-in that would import obj-files properly but I don't think it is available anymore, and there is a new plug-in that I think will do it. It is Windows only and my C4D is the Mac version so I haven't tried it. Try looking in the C4D forum here.