editing a protected map?

from what ive understood, map protection means to remove parts of a map that are only used by the editor, not the actual game. What i want to know is, how to edit a map like that? Do I "repair" the map and then corrupt it again?

EDIT: nevermind. I found a solution|||Shortly would like to add that we do not support any information as how to protect maps etc, surely you are allowed to do so, but if you want to know how to do it, you'd need to google it yourself.|||ok, sry :p