I am migrating mailboxes from Exchange 2007 to Exchange 2013. I have an Exchange 2013 DAG. Previously I was running Exchange 2013 CU2 and had no issues with migrations, they were migrating fast and had no issues. After upgrading Exchange
2013 to SP1 I have had very slow migrations and they eventually halt with the StalledDueToCI status. I was originally doing batch migrations, I dropped it down to a single move request and even migrating a single mailbox from one database to another
on the same Exchange 2013 server and I still have the same issue. I've also tried moving a mailbox to a database that is not part of the DAG and I still have the same issue. I have the ContentSubmitters group so that's not the issue. Once
it stalls I have to restart the MRS and it kicks off again but then it stalls again with the same error. ALL of my databases have a "Healthy" status for the content index. Any help would be appreciated. Thanks.
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