I would assume backups are "current settings" prior to the change you are making (aka a restore point). If I'm correct, if you used your last backup as a restore point, you would have to re-apply what ever change you made post that point.
Not that I intend to get stuck in the hatch but would removing the release handle solve any potential issue (hopefully I'm understanding the issue correctly)?
Running Stg2 from @visconti on my '21 with catted AA DP and cold start is disabled. RPMs bounce for a second or 2 and then idles fine. My understanding is that the cat heats up quickly so cold start isn't needed.