Okay.  Here's what I've found out.  The attached image shows the UVs after subdivision.  The image on the left was exported as .eps from Modo.  The image on the right was exported from UV Mapper after exporting the geometry from Modo as .obj.  It looks like the UVs are fine, as long as I keep the object inside Modo, but they aren't being exported properly.  Which is bad for me, because I intend to use Modo primarily with and for Poser 7.

Is there any kind of update or patch for version 301?  Or some alternate method of .obj export, perhaps using a script of some kind?  Is there something I'm supposed to do within Modo prior to export, to somehow bake the UVs into place or bake the subdivision into the geometry?  Or is the UV export handling for .obj format simply knackered and all SNAFUBAR, so Cage is just out of luck?  What can I do to get correct UV export from Modo into Poser?

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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.