I decided not (did originally) otherwise you only get to be warned about changes once.

This way, once you have examined the differences between ${configPath}/rpmnew/${fileName} ${INSTALL_DIR}/${configPath}/rpmnew/${fileName} and applied them as necessary to your modified config file, you can copy manually to prevent future upgrades from warning. But if you don't, your config continues to be out of date, and you will continue to get warnings on subsequent updates

There are arguments both ways...