I can't confirm that the altered pivot point is lost in the new release (OS X).  in the above, the altered pivot point (new origin) of the hi-res ball was still the same after saving the pz3 file, shutting down poser,  and reloading pz3.  in addition, the altered pivot point (new origin) of the hi-res ball was still the same after saving to a props library, shutting down poser, and reloading altered prop from library.  I didn't try a prop losing its parenting, but this prop reloaded in the same place in both cases.  there may be some issue with that, in case an image can be provided.  the tendency of a prop's location to seem to change as the animatable origin is moved may be a feature, not a bug.