P2012, Windows 7, V4 plug-in.

I have a conforming shirt with very few morphs that I would like to fit a V4 character with weight maps and lots of dialed-up morphs.

I load the V4 character, analyze it... and then what?

I've been through the Poser manual/WW section over and over, but either it does not say or I am really missing something 

Have you downloaded, installed and applied the V4 weight mapped version of the support files?

When you convert the clothing select V41 in the "from" and "to" lists.

In the conversion options include the option to Keep Existing Morphs and Add Full Body Morphs. Then follow the prompts as they appear.

A video tutorial is available at:-
http://www.philc.net/WW2_FBM.php

To the right of each panel in the convert window you'll see a button marked "?" clicking it will enable a pop up giving quick notes explaining what the adjacent GUI elements do.

Hope that helps.

Quote: "Have you downloaded, installed and applied the V4 weight mapped version of the support files?"

Not quite sure what you mean by this. I've just purchased the V4 plug-in from your site, is that's what you're referring to? There is a "weight mapped" check box.  

I glanced at the tutorial link you provided. That should serve me just fine. I should have looked around your site instead of relying on the manual.

Thanks!