Help needed: separating multiple stereo tracks to mono tracks while preserving edits

Wow...  After following the path listed on the Adobe site to get phone-based help with "How to's" I was told by a phone support analyst that Adobe no longer offers any phone support outside of installation, bugs & break/fix (Thanks Adobe - way to stand behind your product... NOT), and he even said that their phone calls were recorded and reviewed so he'd get in trouble if he helped me actually USE the software I'm paying for.  I remember a time when companies actually cared and supported the software they wrote when users needed help - especially media editing software whose projects are usually on a tight deadline.  Those were the days...

So, since apparently there's no such thing as Adobe phone support anymore I suppose I'll post here to see if someone can help me get through this even with the deadline.  Here goes:

I have a project that I created and edited in Audition CC 2018 for Mac and then once back in the studio I opened it in Audition CC 2018 for Windows but all was not the same:

Several tracks that I'd converted from stereo into multiple mono tracks on original import now showed up on Windows as stereo again.  There were many edits (ripple deletes, moves, crossfades, envelope changes, etc.) that had been made prior to me opening the session in Windows and to be honest, I didn't notice the system faux pas (return to stereo tracks) until after having made several more edits and now the stereo tracks that need to be mono are getting in the way of critical production needs.  The content material is a 4-hour audio presentation made up of 4 channels that were originally recorded on a Zoom H4N Pro, which saves as 2 stereo files (even in 4-track mode.)

How - if there is any way - can I convert said stereo tracks (again) into multiple mono tracks AND PRESERVE all prior edits?

When I jump to the waveform editor on any selected clip, it opens the entire file (2+hours each) associated with being the source of the clip with NO edits in place (obviously - it's the whole file.)  This is when double-clicking on a clip in the Multitrack 'timeline' view or going through the menus, leaving me no apparent way to separate or get to the individual R/L channels of the track.  There seems no recourse outside of basically starting over from the beginning.  Surely I am missing something.

I know there's got to be a better way but none of the myriad help documents, videos, tutorials or otherwise seems to address how to do this once files have been cut into clips and/or edits have been made in the timeline/multitrack view.

Any help is GREATLY appreciated!!

And if anyone from Adobe reads this, you guys should consider removing the "How to's" option and description from Phone Support listed on the website, since Adobe offers NO use-case support.  It is very misleading and wastes serious time for both the customer and support staff.