Ok. That makes more sense then. I wondered how that would be the right route to take with it.
I don't mind updating this by hand but wanted to make sure I didn't need to watch out for any known issues with the license validating, or user logins after I update this.
Since it's on a production site, it's pretty important that I don't break it. I guess I can just restore this to my local server and work from there first.