Wow, I’m surprised that bug exists in version E. They fixed the .mov rendering black one in C, I believe. I guess I shouldn’t be surprised, every bug fix released has a new set of bugs the previous release didn’t. That’s why my department is stuck on 9b.
As for ProRes 422, I have no experience with the ProRes codec so I won’t be of any help to you. I seem to remember people on the boards saying ProRes is the preferred codec for interchanging between Final Cut and Vegas though.