Even with morphs created in a different program (Blacksmith3D in my case) Poser has always saved out a PMD. I use that for sharing the morphs as a PMD injection. So no PMDs are very strange.

Try, just for the fun of it, to turn off Use External Morphs. Close Poser. Turn it back on. Close and open and see if that helps. Perhaps Poser forgot it had PMDs on? It tends to forget all sorts of weird stuff from time to time L  

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.