I was just playing with my friend in forge, he saved it, fixed some options and loaded the map again, only to find the map went to a reverted save 2 days ago... Well he didnt lose his map, it was saved to A DIFFERENT MAP.. so just look at your time edited to find your map.
Also note that sometimes your cache'd version of the map is the one you played before you edited it, and you need to to go to maps> forge world > your map to get the most recent version.
IIDTWYCT is absolutely correct, watch out for the cache'd map and re-upload your map from your local files to make sure you get the up to date version of it.