Farcry map and fallout

I was editing my map fixing lighting issues and collision, and I saved my map. It came to eleven o'clock I opened my map and it was GONEEEEEEEE!!!!! it really @#!$% me off, so today I will try and recreate it and have it ready for tonight at eleven o'clock. I have been working on evolved steel mod and so far its going good I finished all the characteristics for NPC's and I am now working on the art direction of the evolved steel NPC's, but I do need a little help with the art side of my mod. bye byeI was editing my map fixing lighting issues and collision, and I saved my map. It came to eleven o'clock I opened my map and it was GONEEEEEEEE!!!!! it really @#!$% me off, so today I will try and recreate it and have it ready for tonight at eleven o'clock. I have been working on evolved steel mod and so far its going good I finished all the characteristics for NPC's and I am now working on the art direction of the evolved steel NPC's, but I do need a little help with the art side of my mod. bye bye