Separate 2 recorded audio channels

[suzi_bob]

I've just filmed a gig. I recorded 2 channels of audio into the camera - 1 channel XLR input directly from the mixing desk. 1 channel from the internal camera mic as a back up/guide track. When I've dropped the clip into Elements 18, the audio appears in Audio 1 as 1 singular file (with 2 wav files displayed within).
I really want to remove the Camera mic channel 2 recorded audio and work with the XLR channel 1 recorded audio.
How do I seperate them to remove the camera mic track?
 Spotted on google that PPro offers a 'modify' option that I think is what I'm looking for but can't find any sort of option like this in Elements 18? Would an upgrade to Elements 25 offer this if 18 doesn't? 

[Bill Sprague · Accepted solution]

Can you try the Audio Effect of "Fill Right to Left" or "Fill Left to Right".    I think you can cover up the camera audio with the XLR audio.   

[suzi_bob]

Yes! Get in! That worked. Thank you so much!