You may find the answer here:
http://forums.creativecow.net/thread/8/986233#986300
I found it with a quick search of the forum - there are also a lot of other replies about this I have not yet read, but this thread has a link to an article on correct P2 importing.
Edit Out Ltd
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FCP Editor/Trainer/System Consultant
EVS/VT Supervisor for live broadcast
RED camera transfer/post
Independent Director/Producer
http://www.blackmagic-design.com/casestudies/detail.asp?case=therydercup