And here is the solution:
create a map with your Landscape in it … and the sky box and what ever is not level dependent.
Create an empty map with your default setup.
open window->Levels
in the new tab click on Levels->add existing
pick your landscape map.
setup your template with your current map… or duplicate the template map you just created.
step 3…
step 4 SUCCESS
make sure noone messes arround with the landscape map. In the template lock the landscape map, set the base level as presistent… save … always save ^^