Unless I'm not seeing it, in Mac Mountain Lion the default save location is desktop whereas it previously was to the folder one was working with.
For example, working in a folder "Model C" with files of versions of a model C, when you bump up the file number (e.g. Model C-31) and save-as, without care, the new file is saved to the desktop. You can navigate to the correct folder, but must do that every time you bump up the file number (e.g Model C-32).
Does anyone know how to change the default save location in Mtn Lion?

If not, a good addition to Mac Shark 9 (etc) would be to add a box in Preferences/Filing under "Save Unit settings with file" labeled:
"Save New Files in Working Folder" or such.