This is already possible in BIAB, although broken in the current version. And it is not a one step operation as you are apparently proposing here. I can tell you this is very doable in the BIAB-VST 2021 and is my preferred workflow.


BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6