[015a]

Yeah; one of my favorites in recent history was the Windows 11 developer preview. I installed it ahead of time to test an application my company distributes. Eventually, Windows 11 is released, and I think: Well, I'd like to get this machine off of the "dev channel" and on to stable, so I can (1) run what my users are running, and (2) not deal with instability.

You can't. Their official recommendation, in the Windows 11 Settings app, is to reinstall Windows 11. There's no way to migrate "backwards" on update channels, you can only go "more unstable".