proxy media and full resolution media must have matching audio channels

This is not a permanent solution but a work around that seems to be working for now.
When you create the proxies make sure your proxy preset has the same channel layout as the original file. Mine come with 4 mono tracks so I made sure to include that in my preset.
Next create the proxies and go into media encoder to ensure it is all working correctly. I have had many issues with it changing my preset to an ingest preset and not adding my custom watermarks etc. Those can be fixed by resetting the proxies in media encoder and ensuring the correct preset and save location are specified.
Also, before hitting start on media encoder make sure to go back to the clips inside Premiere Pro and ensure that the Audio Channels didn't change while creating the proxies. For some reason when I create proxies it automatically changes the Audio Channels from mono to adaptive and this messes with the matching audio channels.
Most of the time when the proxies are finished it all works and the channels are correct. Sometimes, they are not, especially the first clip that starts before I get a chance to fix the original audio channels. In this case detach the proxies and make sure those Audio Channels are correct, then go ahead and reattach them and everything should work fine. Now I can go in and edit the Audio Channels to my liking.

This is no fix and a serious pain and waste of time to my workflow but for now it will have to do. As I've done this with 1000's of clips it has become easy but does add minutes to a workflow that should take seconds.

I can absolutely confirm that this is possible to achieve via ffmpeg. We are using Iconik as a MAM and the edit proxies automatically generated all have matching audio channels.

This should be one click easy peasy. We don't want to use Avid, but these kinds of things are so easy in that world. We shouldn't be constrained by these needless hurdles.

This should be so simple. Just let us make proxies!

This is really killing us, please help.
Thank you.

Proxies are supposed to save time, not add extra steps to make them work correctly.

Actually is unbelievable that we have to ask for proxie have matching audio channels. C'mon Adobe

Another vote: Please allow for proxies with single audio track to replace multi-track audio. If not it really renders the internal proxy-generation abilities of cameras useless in simplifying post workflow.

Please make this happen - this feels like an essential function for an app of Premieres caliber

I vote for this and I am very frustrated that Adobe continues to sit on their thumbs rather than take action to make this update. I'm personally getting sick of shelling out money to Adobe for reasons like this.