Profile Confusion

We have recently encountered an example of profile confusion, in which the performance data intended for one contact is intertwined with a different contact.

The challenge here is we only learned about the other contact through Oracle Support when we first submitted an SR to inquire why an email activity is not found on the Insight Report for a particular contact but available on the operational reports.

Does anyone have any experience in managing and detecting potential contact records that are impacted by "profile confusion"? We've looked through ootb Insight Reports but could not find an example report that could actually help.