Seems nuts that you need to scrutinze your source material for the exact audio layout and create custom export settings, before attempting to use Proxy workflow. If you work with lots of formats (archival stuff can be all over the place) it really makes preparing proxies a pain in the ass. Just put a “same as source’ button on there, like already exists for video.
Yes...I am passing that one along to Adobe. Please do the same.
BTW....this also affects Project Manager, so if you don’t want to use Proxies, but need to backup projects, you should still request this.