[KWo]

Inside the pwf file there is a string with mapname, too, so if the real map name doesn't match that string inside pwf file, the bot code says there is no pwf file for Your map. If the old name of the map has the length of the string the same like the new name, You can just edit with a hexeditor that string and that's it (lower case and upper case are checked, too). If the length of strings of mapnames (old and new) are different, then You cannot do that (it may destroy the structure of pwf file, so it will not be recognized anymore correctly).