Audio tracks become distorted upon import

Hi, 

I am trying to import MXF Files from a Panasonic P2 camera. They include a 4k video and 4 audio tracks. The playback in the Mac Finder works perfectly. 

However, when trying to import, all 4 audio tracks become completely messed up. They start normally, but then the waveform turns into loud static, white noise. Within the clip, the sound briefly goes back to "normal", but from a completely different part of the clip. (e.g. the actor is already visibly talking while we are hearing the white noise and suddenly the sound goes back to normal and we can hear the director saying "action"). 

This seems not like a playback issue, but an import issue, because the waveform in the timeline is visibly damaged. Also, I could not import the clips into PluralEyes. Any help will be much appreciated. 

Thank you!!