The 2010.Q1 release stores replication configuration differently than 2009.Q3 and earlier releases. This update migrates existing target, action, and replica configuration created under an earlier release to the new form used by 2010.Q1 and later.
After upgrading to 2010.Q1, but before this update is applied, incoming replication updates for existing replicas fail. Replicas received under earlier releases are not manageable via the BUI or CLI, although they occupy space in the storage pool. Additionally, the system does not send replication updates for actions configured on earlier releases.
After applying this update, incoming replication updates for replicas originally received on earlier releases continue normally and without a full resync. The system also sends incremental replication updates for actions configured under earlier releases.
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