Failures like in https://prow.ci.openshift.org/view/gs/origin-ci-test/logs/periodic-ci-openshift-release-master-nightly-4.11-e2e-aws-upgrade/1532346119462326272, I found that we don't have a backstop value for osupdatestaged. If we complete the upgrade, then at some point we were OSUpdateStaged even if we didn't observe that event
OCP is no longer using Bugzilla and this bug appears to have been left in an orphaned state. If the bug is still relevant, please open a new issue in the OCPBUGS Jira project: https://issues.redhat.com/projects/OCPBUGS/summary