PST Migration question

Hi, using EV10, Outlook 2010, Exch2010.  On the PST migrator task you can set the number of concurrent PST files to migrate.  We are about to start a client-side migration in the organisation.  If we have 10 concurrent PSTs set on the task, we can archive a PST from 10 users.  If there are another 10 users, theirs would be queued.  What happens when a user who is being migrated turns their PC off, does the server lock out that connection to be resumed when the the uiser comes back, or will it move onto another PST file in the queue and get back to the original one when a connection becomes available?

Thanks.