@jmarkows Yes, I always exit using End Flight or Main Menu, depending on if I want to go for another flight or finish up for the session. I have never exited from the Sim using the Stop button in Steam or closing the window via Windows, unless it's frozen.
Either way, the state saving doesn't function as expected. See testing performed recently in this thread: Aircraft Configuration Not Saved In MSFS 2024
@Tadeus72 Yeah, I didn't notice a difference between either the End Flight and Main Menu button exit methods either; both seemed to result in the same aircraft state upon reload when tested in the previously mentioned tests.