The normal codec which is used btw client and server will strip the tags. By default the replication will also use the same codec to pass Cells from server to server. So when tags are part of the Cells (ie. When one uses cell level visibility labels or cell level acl or any other feature which uses cell tags) we need to configure a Codec which supports shipping of tags also, along with Cells.
We have introduced a config for this
Configure this with a Tag supported codec.
Also make sure this is configured in RS side in source and sink clusters of the Replication.
Does this explain things well Misty?