I've converted the working UV transfer code for the old 2007 TDMT to the new process.  It's working about as well as I expected.  Here's the converted UV map for Antonia.  As noted, everywhere there was a UV seam in the original Antonia UV set and/or anywhere there should be a new seam in the transferred UV set, there's distortion.  In this case, I've only moved the UV's around and haven't tried to do anything to alter the TexSets, which tell Poser how a geometry has the Texverts split.

What might help is to:

• split all texvertices and convert the UV positions.
• Apply some 2D version or Restore Detail to the converted UVs, to pull things back into line somehow.  I'm not sure how that would work, because we can't really count on a constant base set of UV's to which we can refer.
• Weld texvertices which share the same location.

I have code to weld texverts with shared locations, but nothing currently to work any kind of selective smoothing.

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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.