I'm pretty sure Patch Changes are preserved. I can't recall ever having to put them in manually.

One important tip is that once the BiaB file is opened in RB (e.g. the *.sgu, *.mgu file), save it in RB as a Native RB Format *.SEQ file. Next time you open it in RB it will be almost instant.

BIAB & RB2024 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones