I’ve seen a few threads about the psychopathic autopilot already. Just in case though:
I loaded up a Cessna citation and punched in the flight path on the nav computer. All was hunky dory but then I had to save and leave.
When reloading, that entire flight plan disappeared from the computer and had to be re-entered in active pause. ATC also remained convinced that I was still heading to my first waypoint and so further hand offs to other air control towers ceased.
(Joking aside, I couldn’t find where to change my Comms channels in the Cessna, so I was stuck waiting until I landed before it offered the option to go to ground services.)