This is a suggestion that might be beneficial to people like me who have sausage fingers and don't pay attention to whether they're pressing the save changes or the reset button.
It may be of benefit for there to be a check box next to the reset button that needs to be selected for that button to take effect - or maybe an "are you sure" confirmation dialog box on pressing it before it takes effect.
Another suggestion - When doing a copy/paste from amazon into its easy to get a stray space after the ISBN10. Causing the product to not appear on the frontend although it looks OK on the post edit page. Is it possible to trim out any extra spaces that may have been copied in with the ISBN10?