It's a lot easy.
First Step: Open map editor.
Second Step: Click on the "eye" (Display Settings).
Third Step: Disable "Entity Graphics/FX".
Fourth Step: Press Okay.
Fifth Step: Click on Load Map, then load the map who has the snow protection.
Sixth Step: Modify the map =D
There are some cookies on the maps...
(ò_ó)
[I see...]