Originally Posted by jsloan

I mean, I would certainly accept that as sufficient circumstantial evidence that you took the flight. (Although, did Montenegro join the Schengen area extremely recently? If they did, you shouldn’t have needed to go through exit immigration until MUC. Although the lack of a German police stamp should prove something.

At the end of the day, the problem isn’t so much the policy as it is the automation. If you could find a real person at LH to deal with, I’m fairly certain you could convince them that their computer was wrong. But it’s very difficult to find a real customer service agent these days, particularly in functions which don’t’ directly drive revenue.