CouchbaseMigrationReplication

        The CouchbaseScopeMigration resource represents the use of the special migration mapping
within XDCR to take a filtered list from the default scope and collection of the source bucket,
replicate it to named scopes and collections within the target bucket.
The bucket-to-bucket replication cannot duplicate any used by the CouchbaseReplication resource,
as these two types of replication are mutually exclusive between buckets.
https://docs.couchbase.com/server/current/learn/clusters-and-availability/xdcr-with-scopes-and-collections.html#migration