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This task will fail if there is already an object in the repository bearing the identifier given. By contrast, the task 'org.dspace.ctask.replicate.ReplaceWithAIP' (the 'repair' task), expects an existing repository object, and will fail if it does not find one. This task simply 'overlays' the metadata and bitstreams of the AIP version onto the existing record.
Cleanup
Ordinarily, a replication arrangement is long standing: the preservation function cannot be fulfilled unless the replicas (here, the AIPs) are always kept and available. However, some collections (or items within them) may be removed for a variety of reasons: legal challenge, de-accession, etc. When the repository no longer locally wants to hold the object, the replica AIP ceases to have value. The task 'org.dspace.ctask.replicate.RemoveAIP' will delete the replica store AIP for its identifier. As will other replication tasks, if the identifier points to collection or community, all the AIPs of all the members will also be deleted.
Keeping Score
Many