Sorta tangential to PZ3 issues...

"Quote - This will never be undoable as the pz3s cannot ever be converted back to absolute pathways ever again. It is tragic."

http://www.philc.net/PZ3editor.php { Recently updated for latest Win'10.}

PhilC's full PZ3 Editor ($10 registered) can pull the bundled models out of PZ3, similar to how GeomStripper can convert a PP2 to PP2+OBJ.

And, in passing, probably let you edit the paths...