Dual Mono Audio Mysteriously Changes to Stereo When Match Framed - Why????

Hello everyone,
I am having a very unusual problem with the audio on my project, which I'm working on in FCP 5.1.2. All of the audio was captured as dual mono (channel 1 + channel 2), and yet when I match frame the audio clip from the sequence it shows up in the viewer as stereo, panned to -1. When I double-check the source clip in the bin, it is dual mono panned to 0, as it should be. Also, the clips mysteriously seem to pan -1 in the timeline occasionally, even on sections that were verified as being correct in timeline previously.
Does anyone have any idea why this is happening, and any solutions?
Thank you so much,
mynaah

mmmm this is an odd one... the only thing I can think of is that you are changing these clips once they're in the timeline. It's done with a keyboard shortcut: option+L... it will change a dual mono track to a stereo pair. You can change these files back though... typing opt+l toggles the condition back and forth.
Jerry

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