You wouldn't bring it back to Poser, I think.

You would start Poser, Load Dawn for Poser, Load the Morph like here:

http://poser.smithmicro.com/tutorials/Characters_morphing.html

(the first paragraph and screenshot show how to load a morph target made in an external software)

Then save and create a PMD as shown here:

http://www.nerd3d.com/modules.php?name=Content&pa=showpage&pid=13

 

(Sorry if you prefer videos, I don't like video tutorials, so usually my saved links are to html or pdf pages)