Do you have the same issue if you follow the OP’s steps to reproduce it?
Provide extra information to complete the original description of the issue:
The airport is now completely missing. I made the last update of the LNM database after DACH2 was released. The airport was displayed in LNM until today. After I no longer found an airport there, I reimported the LNM database from MSFS and the airport was gone.
If relevant, provide additional screenshots/video: