The way it works now. If you increment the version number, then select "ok" button will prompt for a new file name. It provides a default name+version number. I've already messed up a few original recipes by changing the version number, modifying the recipe and then clicking "save" This action overwrote the original recipe without being prompted.
Perhaps, if you change the version number, add the same popup as the "ok" button. This would mitigate some of the headache of overwriting a recipe.