it may sound weird or “impossible” but it’s happening and i’m reporting it EXACTLY as i see it.
Since it IS impossible, I could only assume you meant something else like, for example, object not showing in the Instant replay, which is NORMAL. As I've said, it's impossible you would see the airport buildings when starting a flight, but not when loading a saved flight.
So, I'll ask it again, just to be sure:
Do you STILL see the "Airport cache loaded successfully" after loading a saved flight, with all the normal menus (Couatl and GSX) still there ? If the saved flight has a different airplane, the software will restart automatically so, I'm trying to understand if your issue it's just that for some reason, the restart doesn't work when switching to a different airplane and, perhaps, if happens with a *specific* airplane model, one that was used in that saved flight.