Whether the joint order matters might depend on what kind of actor this is and how it relates to its parent or children in the rigging.  At the very least, there is a great difference between how Poser handles its "twist" and "joint" rotations.  My impulse is to suggest that for most body parts the rotation order probably does matter, but I haven't done extensive tests to verify that.  :unsure:

What sort of actor are you dealing with, and how does it fit into the rig? 

 

On edit: With the mapname editing I suggest above, the same swaps would have to be made for all actors affected by each joint.  If the mapname references don't correlate properly among all actors affected by a particular weight map, the results could be... messy.  This really could be "the hard way", in some cases.

===========================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.