Failed CDMS Migration

I have begun to migrate my file servers to CIFS shares on the Celerra via CDMS. So far it has gone well but today I came in to it being in a failed state. I believe I have corrected the issue that caused the failure.

My question is when I start the migration again will it pick up where it left off or recopy all of the data? I'd hate to have changes made to files currently on the Celerra be overwritten my files from my source file server.

Thanks in advance.