Offizieller Kommentar
If it is a mission that was saved a long time ago it might have been saved when there was a bug that was saving missions incorrectly.
Update the layout when given the chance and save it again before deleting the old one.
Connecting an aircraft does not update the camera that is selected in the Settings. If there is no camera connected to the app it will use the value that is selected in the settings for determining the layout spacing and that information gets saved with any missions that are saved. Alternatively, if you have an aircraft connected those are the values that will be saved. The aircraft selection is part of the saved mission.
If you have questions about it send the .mme file and screenshots of your settings.