Quote - I'd noticed that trying to save a prop, parented or not, to the PZ2 library created that duplicate version thing. But it didn't save any any of the rotation/translation data though.

I'm very surprised that you say "parented or not". It's my experience in P6 and previous, that I can save a pose for a prop that is parented to a figure, using 'Select Subset' to include only the prop.