Prevent accidental clicks on "save" button for product shipping settings on order page

[The_Token_Shop]

We have had issues unknowingly clicking on the save button for saving the single order item shipping settings. 

We have to periodically go back to make sure that no products have had the setting set. One of them accidentally got set as Express shipping which could be very bad.

Even a warning "Are you sure you want to save?" Yes/No button would be good here.