1. Link the registration transaction to the constituent who registered (the spouse) in Online Express
  2. Once it has been downloaded into batch (and the spouse's participant record has been created) change the constituent in batch to the Head of Household.
  3. When prompted that "This row is linked to an event registration. Do you want to delete the [Event Name] event registration for [Constituent Name]?" - Click No
  4. Link the gift back to the spouse's registration by choosing the "Load Registrations From" option
  5. Commit the batch and the gift will show on the Head of Household's record