Thanks to all, I've got it all running pretty well.
The restore is in the GUI section, which I didn't expect, and that's where I think my confusion came from. I figured I was going to have to cut and paste with vim on a command line and then reboot.
I love the fact that you can restore just a section of an old config file, this is a brilliant feature by the devs. In my case, all I really wanted to avoid was typing in all of the static mappings in the DHCP servers and I was able to import all of that in a couple of clicks.
Brilliant.
Thanks!