Editor saves my level into nowhere (SOLVED)

When I press "save as" and choose the .mis file in my level it says nothing,
When i load my level called "sahara" in the menu nothing has changed but when i switch to the editor and open the .mis file it loads a "blank room"
in the menu there should be one level.
I think the .mis file of my level is not in my level folder but i don't no where it is saved.
How can i find out where my .mis file is saved?
I can't find another .mis file in my BeamNG.drive folder.


My level folder:

 

Re: Editor saves my level into nowhere

Thanks, now everything works!