343 Please help me revive my old halo3 forge maps!

I’ve made a lot of maps in Halo 3.(Hence my gamertag)

I was able to revive 1 of my old maps via file share but the rest are all gone and it would really make my world if I could see my old maps again… I dont know if its even possible but it would really be amazing.

Is there any way to retrieve my old map files?