[2021] Help Needed with map editor

Did you place the airport in the map editor?

Move It would be my go-to for this, does it not let you select the airport? Or will it not delete it?

Hmm, that sounds very strange! :S Might be worth trying with the mod Better Bulldoze. That's all I can think of.

Also make sure to disable all mods you don't absolutely need to creating the map. Most mods are made for the simulation and break in the editors. They might cause weird stuff like this, so I find it best to just avoid any that aren't doing something I really need while in the editor. Ofc that's no help for your current map. :/

Ah damn. :/ You can always export the height map to easily redo the map. And you can select everything with Move It, unselect the broken airport and then export everything with Move It. Then use "Restore" to import it again with Move It. At least that will save you some time redoing the map.