[fabianfred]

That requires the Fully Unlocked maptools FMB ...which is available to all in the map makers tools section.... but when you use it to change an airfield...change textures...change parking/taxiing waypoints etc. you are in effect creating a new unique map.... so you need to follow the rules for that

you need to rename the map and have all its files in its folder in the MODS/MAPMODS/maps/xxx folder ...and its details in the all.ini file in the maps folder

plus you must have a folder with the same name in the Root/maps/ folder (make one if you don't have one)

when you edit a map in the Tools FMb you must 'Save' ....not save as ...and it will save to the root.maps folder
but it will load the map from the MODS/MAPMODS/maps/xxx folder....so to see your changes you must copy the new files from the root/maps/xxx folder into the MODS/MAPMODS/maps/xxx ....after exiting the game