Add option to export using the proxies, not the raw, when using proxy workflow
Please add an option in the Export menu to 'Use Proxies' (like the option to 'Use Previews'), instead of the export being transcoded from the original media. Editing 4k camera raw media with 1080 ProRes proxies, an h264 export can four or five times as long as it would if it was coming from the proxies when just exporting a 720 work-in-progress cut.
Alex Elkins commented
Make sure you're voting on this thread guys and gals, it's got a lot more traction: https://adobe-video.uservoice.com/forums/911233-premiere-pro/suggestions/33870577-option-to-use-proxies-or-source-clips-when-exporti?page=1&per_page=20