xdcr- Incorrect UI display on setting up replication. UI displays "undefined bucket" replicating "one time" to another bucket.

Setup a replication from cluster1(bucket default-0) to cluster2(default-0)

Display shows "One time replication" between "undefined buckets"

Expected output:
Bucket1 to bucket1 replication on "Continous" mode?

Attached is a screenshot.

The logs show
-----------------------------
ebucketmigrator_start,<0.1663.0>,

{"10.3.121.32",11209}

,

{"10.3.121.31",11209}

,
[

{bucket,undefined}

,

{username,"default-0"}

,
{vbuckets,
------------------------