Hi Kellan -
I recommend you look at my reply to another thread here: Migrating data from exitsted chef11 servers to new chef12 server (I think this link will work).
You can use the upgrade tooling packaged with the Chef 12 server to do what you want, you’ll just need to add a manual step of copying over the data from the old server to the new one.
As far as how that will setup an org, you’ll set a default org that all the migrated data will be associated with during that process.
If anything isn’t clear, ask and I’ll try to provide clarification. Do note that for the tooling to work your Chef 11 server has to be at least version 11.1 or greater. If it isn’t, upgrade to the latest 11 version and then proceed. (I’m assuming you’re running open source Chef 11 server and not Enterprise Chef 11).
Thanks,
Mark Mzyk