How to transfer your old Hamachi 1.x account to Hamachi²

LogMeIn has upgraded their Hamachi software from version 1.x to Hamachi². There are major differences between the two programs, and moving your existing setup from one to the other is not as straight-forward as one would wish.

Scenario A: You already have Hamachi 1.x installed and running

Simply install Hamachi². It will detect and transfer the account from the old program to the new one. All account settings and network memberships will be preserved.

Scenario B: You are installing Hamachi² on a freshly installed computer that previously ran Hamachi 1.x

1. First install Hamachi 1.x
   
2. Copy your backed-up Hamachi 1.x config files into the configurations folder (typically C:\Users\YOURNAME\AppData\Roaming\Hamachi).
   
3. Start up Hamachi 1.x and check that everything is working
   
4. Install Hamachi². It will detect and transfer the account from the old program to the new one. All account settings and network memberships will be preserved.
   

In the case of scenario B, it is vitally important that you have your config files backed up, or you're screwed to begin with and have to start your Hamachi account over from scratch anyway.

As for backing up your Hamachi² settings, I have tried to follow the instructions on their FAQ pages but failed to make that work. This may have something to do with the computer I tested it on. I will update this post when or if I figure out how to get it right.

The procedure described above is based on answers in the Hamachi forums, "Migration: Hamachi 1.* to hamachi2"