A normal file system (used in Mac/PC/UNix):
Load offers a dialog without any suggested file to load. Save, saves over the current file (as BA does now). Save As offer the option to save on the same folder and with the same name that the original file, then you need just to change, or add, a character to have a copy of the file with a different name.Now, when you want to save a copy of the map you're modifying, the original name appear as default, but when you add or change a char and save, you don't get a copy of the map with a second name, you get the original map name changed, this is as it worked in the latest version. The only way to get a second copy is the old way, select new, and then put all new name.