virt-who appears in content hosts, hostname

Hi - hoping there's a simple answer to this. I've recently built a Satellite server running Satellite 6.2.14. We have VMware ESXi hosts so I'm also running virt-who from the Satellite server itself. All the content hosts have been picked up but the hostnames are all prepended with "virt-who" - so they all appear as virt-who-fqdn.

Does anyone know how you stop this from happening? My virtwho config looks like this:

[ipvcs]
type=esx
server=xxxxxxxxxxxxxxxxx
username=xxxxxxxxxxxxxx
encrypted_password=xxxxxxxxxxxxxxxx
owner=Production
env=Library
rhsm_hostname=xxxxxxxxxxxxxxxx
rhsm_username=xxxxxxxx
rhsm_password=xxxxxxxxxxxx
rhsm_prefix=/rhsm
hypervisor_id=hostname

Thanks Julian.