Change Participant Status from Participant Search Actions Menu Does not Change to Attended

I have run several checks to verify the behavior:

When you use either the Change Participant Status or Batch Update via Profile to update a participant's status to Attended it instead changes the participant's status to Registered. If you attempt to run the update again the status will be updated to Attended on the second time.

• This occurs even if the current participant status is currently "Registered."
• This occurs regardless of whether or not the event is Current or if the End Date has already passed.
• This does not occur when trying to change to any of the other Participant Statuses (i.e. Cancelled, Pending from Pay Later, ect...)
• This does not occur when editing the Participant status directly from the Participant Record page.

I have not yet had an opportunity to test this on ver. 4.0.2.

As a side note, this also results in sending out the Registration Confirmation email a second time.