Hi there, Ben found a pretty interesting bug in 2.0 and I can comfirm the bug.
If you POST a doc into the replicator database a replication is kicked off and finishes successfully (usual 5984 port which maps to 15984 via haproxy). The problem is that the DB is replicated to the backdoor ports (15986) and is not visible on the other ports. I opened a Jira ticket to track the issue: https://issues.apache.org/jira/browse/COUCHDB-2980 Best, Robert :)