Audit history will show you the history of the record itself. Is this table audited? That should be the first check, since it isn't showing anything at the moment. Next to that: the relationship is in the cmdb_rel_ci table. I have to wake up my PDI to be sure, but I think you should also be auditing that table to get 'relationship' entries.
Please mark any helpful or correct solutions as such. That helps others find their solutions. Mark
