I've shot a video using the Sony Z1, recording the audio using an external boom mic through XLR1 and a radio mic through XLR2. The problem is that when I capture the footage using any of the HDV presets FCP is only picking up channel 1, channel 2 being completely silent. This is very strange as when I listen to the audio through the camera I can hear both channels. I've never had this problem before and it's driving me crazy. Can anybody point me in the right direction?