I was just about to post a question similar to this. :)

Like Ockham mentioned in his first post, the CenterOfMass props get created for every figure in the scene, and it seems like they get re-created every time you save the scene.
I have some scene files with 4 or 5 CenterOfMass props for every figure: the human figure, the dress, the shoes, etc.

Why in the world do I even need 1 CenterOfMass? And why isn't Poser smart enough to see that the figure already has this prop, so there's no need to add another one... or a third one or a fourth one...

Thanks for the Hierarchy Editor tip- I'll see if I can delete them that way.

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