Do I surmise correctly that Bugzilla tickets are only to be created if there is a packaging issue preventing python3 "compliance", and not if  upstream needs to be updated first to support? If so, is there a different resource that is used to track any research done into upstream that identified the need for changes?  Or is the assumption that there would be discussion on the upstream mailing list or an issue in their project specific tracker and thus a Bugzilla entry would be redundant?

Thanks,
 Troy