Actually, I do sort of halfway understand this, I'll have to try it for myself to fully see how it works, just like geomety switching and alternate geoometry, I didn't see how it worked until I actually used it, on the mermaids Kalypso- just have you tried opening your new CR2 in Poser and resaving it? The materials will not be correct until you do that. I use "borrowed" CR2s all the time, dozens, maybe hundreds of them - they all use different materials. I have Vickie CR2 (actually SMV), for example, with all morphs and materials stripped out, I use that as a starting point for many clothing items, I just delete th ebody parts I don't need, and modify the parenting.