Hmmmm, i will have a look! I usually get this fixed pretty quickly, but the mod takes a long time to get approved.
NoahMarcelh updated Revisited 2013 (Maps) with a new update entry: 1.4.6 - The Menu Update Read the rest of this update entry...
And, that's it! For now atleast. Might make a forum version which features non-official beamng maps ported to modern formats.
I know this thread is old, but where can I find the heightmap for the 2013 cliff, I tried exporting the height map from the ingame level editor, and it 'exports' nothing. edit: imma just edit the map itsef, in other words, i solved this myself, please ignore.