My guess would be the same. You can also set one of your saved tournaments as the "default" tournament. Then, when you start the Tournament Director, or when you press the "New" button to create a new tournament, it will load the saved tournament and reset it, including the filename. By resetting the filename, you will be forced to press "Save As..." and provide a new name. The "Save" button will be disabled. No accidentally writing over a saved tournament file.
You can set the default tournament by pressing the "Config Files" button on the Preferences tab.