[Regression?] hippo:lockExpirationTime auto-exported in spite of exclusion

Upgrading the Poll demo project to use the GA version, I noted that when I visit the homepage and submit a vote, autoexport not only exports the updated vote count, but also a hippo:lockExpirationTime property. That property is configured (/hippo:configuration/hippo:modules/autoexport/hippo:moduleconfig/autoexport:excluded) to be excluded, so I'm afraid we should double-check if we broke something, or why this property gets exported in spite of the configuration.