Hi Hideshi, Apologies for the delay in the response. The bz had been triaged as valid and was in our backlog. I've started work on it upstream. I'm afraid there is no workaround besides manual database editing.
*** Bug 1823273 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (openstack-nova bug fix advisory), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:4393