I don't know the answer to this. I have the same problem too.  Sometimes I get a message saying that 2 things have the same name and then it renames one of them.  For example the other day I had 2 Vicky figures in the scene.  At some point while working on the image, I got a message about 2 things having the same name.  Poser then renamed one of the figures to "Chain_1".  So instead of having 2 Vicky figures and 1 necklace in the menu listing, I ended up with 1 Vicky and 2 necklaces.  Was confusing as all heck!!!

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi