We perform updates to the sudoers file from time to time which means we need to update it with every update (as we have no way of knowing which version people are upgrading from).
We do this by deleting the file
/etc/sudoers, copying the template in it's place and reinserting the master user into sudoers. I am planning on making the switch to moving our template to
/etc/sudoers.d eventually; however I have had little time to devote to the project recently. Once the switch has been made,
/etc/sudoers can be modified and the contents of this file will not be touched. It should also allow the user to retain root access in event of a botched template copy as sudo users will be written directly to
/etc/sudoers and quickbox specific commands will be pushed to the other file.
As a personal work around, you are welcome to use a file in
/etc/sudoers.d should you feel the need to add extra sudo users that are not the master user, for now.