Adam,
I will typically Freeze it, Then grab the frozen clip while holding CNTRL and drag it to a new track or an empty space in Sonars TV. Once a track is frozen it acts almost like a normal audio track (copy/paste)
Then all you need to do is unfreeze the original track.
(There are also freeze options that will allow you to print or not print FX to freeze).
Its basically the same as bouncing the track minus the BS of dialog menus (unless you need those).
Then right click/Convert to mono.
Hope that helps.
Chuck