I have had this problem with the ProPack as well. I also had it - although less consistently - with Poser 4.0x (never installed 4.03).... The most helpful feedback I have been given is a suggestion that I should not be saving parented magnets in the PZ3. Apparently, they should be saved to the library, and applied on a case-by-case basis. Because the problem is so pronounced on the PP, I have simply not been using it.... The deformers are a very important part of Poser. Please fix them, Curious Labs Guys!!!

===========================sigline======================================================

Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.