My map disappeared.

Hey all,

I made a forge map in Halo 2 anniversary not even a month ago. I spent the better part of a whole working on it. I played on it with a few friends and they, as well as i, absolutely adored the map. So you can imagine my devastation when I signed on to showcase my map for my YouTube channel and notice that my map was entirely missing. Poof. Gone .guys I’m nearly in tears here. Is there any way, any way at all to recover this lost masterpiece? It was like 2 or 3 weeks ago that I was playing on it. Surely there’s some way to find the map in backup or somewhere. Would having my friends check their recent maps work? I’m freaking out .