When you're taking a map=making break, and you don't want to lose any of your progress, you type in the map name and what you want your map to show up as (like when you move you move your mouse to the right of this site), then it should let you save. ^^ Or, if you have already saved the map, then something should appear asking if you would like to overwrite the previous save. Click ok and you should be good. ^^