Would it work to open the altered figure, select the clothing you want from the library, and replace the current figure with the "retain modified geometries" (or whatever it is...) selected?

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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.