I have noticed the wierd altitude readouts from the track logs. I searched the forums and found this post.
mduell, let me see if I understand your explanation.
Fligth is talking to ATC facility ABC and level at FL350. ABC hands flight off to XYZ facility who then issues a descent clearance. Aircraft starts down and ABC’s radar still sees the flight but reports the altitude as the previous when it was in ABC’a airspace? Do I have that right?