I see so many of these kind of posts--people who rent or borrow an XDCam EX camera and then try to cherry pick the video files out of the BPAV folders. Sony actually should have done a better job of teaching workflow but they did a lousy job of it and now it is left to respondents on Cow. This is a brave new world of tapeless workflow and it takes some preparation and thinking, and is not something you want to do after you shoot on a rental, and have to give the cards back with the camera.
But if you have the cards, hopefully you haven't dumped your BPAV folders on the cards. Be warned, they are all labelled BPAV and you need to set up an individual folder for each card, like "Card A" and "Card B" and "Card C" and so on depending on how much you shoot.
Then you should always use XDCam Browser to locate and drop those Clips into the folders you set up on your drive. This actually creates a new "BPAV" folder in the previously empty folder on the drive. DO NOT OVERWRITE THESE once you drop them in. Browser has precautionary warnings and imagery.
Then use XDCam Transfer to re-wrap what is in Browser. Make sure you go to preferences and tell it all to go Capture Scratch and the folder in there you want it to go in. Bring all those cards into XDCam Transfer at once. Highlight all cards, and hit Import All Clips and that sets it up for FCP. Only taking it through Browser does not set it up for FCP. It sets it up for almost all other editing software but not Final Cut.
If you dumped your BPAV folders on the cards, then use Calibrated Software for using in Final Cut Pro at
http://www.calibratedsoftware.com/MP4EXImport_Mac.asp and it will cost you, but test it first to see if it works properly. It'll have a watermark on it until you buy it. XDCam Transfer is free, but you may not be able to use that anymore if you discarded the BPAV folders. All those crazy folders have necessary items in them.
Greg Ondera
http://www.Plexus.tv
http://www.SurgeonToday.org