DNS Express is showing internal zone

We are using on-box BIND with "internal" and "external" views. We have configured two DNS listners; Internal and external. External listener is NATted on the firewall for outside world and is non-recursive. External DNS listener has a dns profile with "dns express" enabled.

dns express zones are created pointing to the local BIND with either 127.0.0.1 or the IP address of the listener.

For some reason, the DNS express transfer "internal zone", while it should transfer external. I have tried quite a few things and read articles but couldn't find enough detail on how to set up 'dns express' all things considered.

Any ideas on why it is not transferring external zones?