restore original on quit option maybe

[si458]

sometimes i'm playing around with stuff, so i add a few domains and ips into a new list,
i apply that list, and all is ok, no issues, brilliant!

but then i quit the application and later realize something isnt working (CHANGED IP RANGE)
i then realize the list is still being applied instead of reverting to the original list

is it possible to add an option maybe into the preference to say 'restore original on quit'

this would then restore the original file if you QUIT the application

i am talking about QUITING the application and not hiding it in the menu bar