Notice the Registration Column, does it contain a notation of "Do not register"?
A few scenarios in which the Do not register notation will be present:
- The registrant's participant name is different than the billing name used
- One person registers a different user
- A person registered on behalf of an organization
To filter on only registered participants:
Starting point: The Raiser's Edge>Records>Events>Open Event>Participant tab
- Click the filters button
- Select Registered from the Registration dropdown
- Click OK