I wasn't able to change the upstream status back to "New" so I've opened a new bug to track this at https://bugs.launchpad.net/ubuntu/artful/+source/neutron/+bug/1744062.
I wasn't able to change the upstream status back to "New" so I've opened a new bug to track this at https:/ /bugs.launchpad .net/ubuntu/ artful/ +source/ neutron/ +bug/1744062.