I think I understand the intention. Not just install a previous version, but 'roll back' to all of the last used settings of that previous version.

I keep every BiaB single upgrade labelled and available by Year and Update build (currently about 200Gb+ of .exe upgrades, separate from the Audiophile files), but these would not include the specific settings that previous versions used.

Not sure how to do it, but worthy of consideration.
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BIAB & RB2021(Audiophile), SonarPlatinum, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M StudioMonitors, Pioneer Active Monitors, AKG K271 Studio H'phones