I don't think you can do this, when you save a dynamic hair setup as a prop you get "it is recommended you save the parent prop yadda yadda".  Hair guides, I am fairly sure, are "rooted" to individual polygons or vertices - in Cinema 4D's dynamic hair, that's how it works, and there is a provision to reset roots for occasions when you want to move the hair from one piece of geometry to another.  It doesn't seem to me this is implemented in Poser, I tried a variety of ways (between primitive prop to other primitive prop, figure to figure, etc) and they all end in a crash.

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