*"you mentioned earlier that you were just applying deltas, but it looks like you still adjust 'all' verts and not just the ones involved in some morph."

*Every vertex ends up with a new delta assigned to it.  This is the problem with the lower resolution to the higher, which leads to the "piggybacking".  Every vertex is finding a matched vertex and adapting the deltas of that match for the new mesh.  So we are transferring deltas, not looking at actual "shapes" (as in NoPoke, say, which uses the world vertex positions; an approach which may explain why Ockham's scripts don't fall prey to the RAM leaks and which may, therefore, clarify some serious limits in PoserPython's potential).  

I haven't run across a situation yet where a matched vertex fails to find a delta listing to convert.  I hadn't even looked at it that way; I've assumed we want to move all of them.  Could that be the secret of the current successes?  I don't know.  I bumble through a lot of happy accidents....

More later, after I've read in more detail offline....  AOL likes to boot me off during the day.

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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.