I’m having the exact same problem, having imported an OMF from Avid where music and stereo SFX come split into mono tracks . Evaluated Audition 6 as a light option to Pro Tools, and next week I’m holding a workshop for Premiere editors. Forgot to look into this little detail, and now I’m starting to panic a little…
Pro Tools: select the two mono regions, hold shift or ctrl and drag and drop onto the stereo track – done.
Audition: No clue. What are the options? Is there any fast way to control volume envelopes and FX on two mono tracks simultaniously?