Enabling a replication agreement resumes replication with the designated consumer. However, if replication has been interrupted longer than the replication recovery settings allow and the consumer was not updated by another supplier, you must reinitialize the consumer. The replication recovery settings are the maximum size and age of this supplier’s change log and the purge delay of the consumer (see To Perform Advanced Consumer Configuration).
When the interruption is short and replication can recover, the master will update the consumer automatically when the agreement is re-enabled.
You can use DSCC to perform this task. For information, see Directory Service Control Center Interface and the DSCC online help.