Record Level Audits

I have established a record level audit that is referenced from two pages. The first page references the record being audited directly on the page and works fine. The second page uses derived records and the data is currently being saved through the component.record.SavePostChange() action. In that code the appropriate records are updated using a locally defined record object's update method (see code sample below). Changes are seen on the primary record but the audit record is not populated accordingly. Any help would be appreciated.

I understand audits will not happen for sqlexecs or sql objects. Do record objects fall into that category as well?. Basically, do the objects have to be on the page (ie in buffer) for audit records to work? My guess is database triggers might be my only option?