I can't anwser the second question simply because I don't render animations as yet.  However, I can input on your first question.  

It sounds to me that you are not conforming the clothing to V4 once they are introduced into the scene.  There are 2 ways to conform clothing.  The classical method involves clicking on the clothing content to bring it into the scene, highlighting the clothing, then pull down the figure menu on the upper taskbar and select Conform to..., as illustrated.

The second method is suited for P9/PP2012 & P8/PP2014; select the clothing figure from your library and drag & drop it on your model.  It will automatically conform once you release the mouse button.

Now if you are using dynamic clothing, that is a different issue.

Where is the clothing content located in your library?