I noticed that modrdn and modrdn2 does not delete the oldrdn attribute, it just appends the newrdn to the old rdn attribute, e.g. dn:cn=zwark, dc=surfshop.net, dc=ph, dc=surfshop.net, dc=ph cn: benjamin zwark sn: de los angeles objectclass: person organizationalPerson The old rdn is "cn=benjamin" and the new one is "cn=zwark". Is this a known bug?