Is the ‘extra file’ an SMI? If so there are spanned clips, which Avid AMA supports. There should be nothing besides EX-generated files in either the CLPR or TAKR folders. I’m assuming they’re using AMA since AVID is looking directly at BPAV?
If they are missing part of a file this is normal if the files span volumes/cards and both volumes/cards are not available to the system. Is there a ‘Clip Transit’ locator in the preview window? Even if the media is offline this will still show up if in fact we’re looking at a spanned clip. If removing the SMI corrects everything that’s probably because Avid is only looking at the standalone MP4s and not looking for the rest of the clip(s), i.e. the spanned portions located on some other card or drive.
If we need to go further please provide more info re what you’re seeing and what version of Media Composer they’re using.
Best,
Ian
Ian Cook
Sony Broadcast and Professional Company