This part is pretty easy:

Import your m4/V4 into MD using Import>OBJ and click on the AutoScale box. 

For export: Select the cloth pieces, and click on the 8' Poser scale.  When importing in Poser, uncheck the "Centered" and "Percent of Standard Figure Size" boxes.  It should then come in perfectly.  

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As for the issue some have of bringing it into poser? I have had no issue(except for sizing the OBJ down to fit v4 again >.<) In fact the first render I did with my first dress because I couldnt get it to do what I wanted in MD I did it in poser and was plesantly surprised and the drape in poser.

All I can say is get it, learn it. You WILL love it.

 

 

RosemaryR
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"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."