Is the track you are duplicating a stereo track?
If so it likely has the signal on the left side and not the right, so panning it right just makes you hear only the right (empty) side. No joy. (or the opposite sides could be used in the example here, you didn't provide which side worked or which didn't).

As mentioned, if you can split the track to two separate MONO tracks, you will then have a single track for the left side and a single track for the right side.
In RB just select the track, right-click and click Track - Split a stereo track to 2 MONO tracks ..
One will be empty and can be deleted. The other (with the data) can be panned center and heard in both sides ..

at least that sounds like what's happening from your description.

The way to circumvent this is to record to a MONO track to begin with. Many DAWs default to a stereo track for a new track, so it's easy to have happen



I do not work here, but the benefits are still awesome
Make your sound your own!