2 stereo channels into 1 stereo track

hi all
I have a stereo track with one mic recording in the left channel and the other in the right. I can't work out how to convert this into a stereo file where both mics can be heard in both channels????
I know how to convert them into a single mono track, that's easy. But I need it in stereo as I will be adding music to it in a multitrack file later on and would prefer stereo quality.
is anyone able to help? please?
thanks

If they are of identical (and I do mean identical) lengths, you should be able to copy and paste one track into the other and set the level so it matches.
Like adding a harmony to a chorus, except you're selecting the entire track and pasting it into the entire (selected) other track.
From the Edit menu, select Mix Paste, and it will ask you to set sound levels for the original and added selections. It takes a few attempts to get it like you want it, but it should leave the stereo track with both mics audible.

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2 stereo channels into 1 stereo track

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