I am trying to find a way to migrate about 20 users off of SBS 2011 server to a new 2012 Essentials Server. The MS instructions I have found indicate that during the 2012 install I should come to a choice to install as a new server or in Migrate mode, but this doesn't happen. They are not using Exchange on SBS 2011, so if necessary, I can just move the acocunts, but I tried this once and had trouble getting the workstations out of the old domain and into the new one using the connector software. I was using the same domain name as the old server, perhaps I should change it? Wish there was some way to migrate and keep all their settings, though.
Microsoft Legacy OSServer SoftwareApplication Servers