Cook Island Extension with multiple Sublevels

Hi guys
I need to make an island extension to modify the existing terrain wich consists of multiple sublevels
i typed in the ARK Dev Kit window in Maps:Obelisks,LandscapeSublevel,C4_Far_WIP,C4_Near_WIP
But in the game it only shows the modifications to 2 of the 4 submaps. The modifications to LandscapeSublevel are not visible.
What can i do?