Moving mailboxes in 2013 - failing

Hello,

I am in ECP on 2013.  I'm moving from 2007 to 2013 and the first mailbox is nearly empty so it should move in seconds - it is only for testing.

I've gone to recipients

selected a mailbox

Move mailbox to another database

I create a batch file test

I move primary mailbox only

I select the target database on the new server

I select automatically start

I select automatically complete.

I get the following error

Data migrated:                        
Migration rate:                        
Error:                        MigrationPermanentException: Unable to process a move that deals with separate primary and archive mailboxes because server 'anth-fsexn.anthemvp.lan' (Version 8.3 (Build 298.0)) doesn't support such moves. --> Unable to process a move that deals with separate primary and archive mailboxes because server 'anth-fsexn.anthemvp.lan' (Version 8.3 (Build 298.0)) doesn't support such moves