Recover registered servers in SQL Server Management Studio 2012

My computer died so it's be reinstalled.

Previously I had SQL Server 2008 R2 installed. On the new system I have SQL Server 2012.

I have the old RegSrvr.xml file (that contains the list of registered SQL Servers).

How do I get the server list from 2008 R2 into 2012?

Update:
When doing Local Server Groups -> Tasks -> Import and choose the RegSrvr.xml file, click OK it's says "The import was successfull" - but no servers or folders has been added and the RegSrvr.xml file for the 2012 installation has not been modified

Sample from xml file

  
    
      /RegisteredServersStore/ServerGroup/DatabaseEngineServerGroup/ServerGroup/Company1/RegisteredServer/stage
    
    
  
  
    
      
        
          /RegisteredServersStore/ServerGroup/DatabaseEngineServerGroup/ServerGroup/Company1
        
      
      stage.server.dk
      
      stage.server.dk
      false
      -986896
      DatabaseEngine
      server=stage.server.dk;uid=username;password=AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAegY4QOvPGEGcK2Xdr+jDjQQAAAACAAAAAAADZgAAwAAAABAAAADesdxAGO4GO879z1yS2DZeAAAAAASAAACgAAAAEAAAAGAvgtRJfPRL/puHnREmKu8YAAAAUxRIQVDZHywb7rOYL9MRqG0B2Jvi8kyfFAAAANs53tVPbVux2j56oRU/2oGtmQc9;pooling=false;packet size=4096;multipleactiveresultsets=false
      PersistLoginNameAndPassword
    
  

If your RegSrvr.xml contains a "password=....;" in ` section, replace ";uid=...;password=...;" with ";trusted_connection=true;"`

In the same file, replace:

PersistLoginNameAndPassword

with:

PersistLoginName

Now the server registration will try to use Windows Authentication. Once the Registered Servers are loaded, you can go back and edit the registrations to use your SQL Authentication information.

StackExchange Database Administrators Q#19177, answer score: 6