[keycloak-user] Corrupted policies

I guys, I encountered this bug: https://issues.jboss.org/browse/KEYCLOAK-4340 Basically after exporting, my policies are inaccessible. My keycloak version is 3.1.0.Final. Is there a workaround? Can I delete the policies via API? Should I edit the database? I connected to H2 database but there is no tables. What is the login/password when logging to H2? Cheers