Please reply to https://github.com/Icinga/icingaweb2-module-director/issues/2104 if you have anything for me to try.
We upgraded postgresql on our host, and everything looked fine, all hosts were there, everything. Then I saw the endpoint for Director was disconnected. Seems a chicken/egg problem caused the kickstart to fail, so I reran it, went fine. After this, I noticed all our objects were gone, as if it was a new database