https://bugs.openldap.org/show_bug.cgi?id=9772
--- Comment #1 from Quanah Gibson-Mount quanah@openldap.org --- The problematic change is missing from the bug report. From the mailing list, the change that broke cn=config replication is:
dn: olcDatabase={2}mdb,cn=config changetype: modify replace: olcDbCheckpoint olcDbCheckpoint: 1 1