Since the donation was made through a registration form, we cannot move a donation from single step donation form or registration form to a Custom FAF event. You will need to delete that donation and re-donate through the FAF.
Steps to reverse donation:
  1. Navigate to Communities > Special Events > Friends Asking Friends > Kintera Thon
  2. Hover over Thon Name and Click Bookkeeping
  3. Click Manage Initiative Records
  4. Click the Donor Radio Button
  5. Search for Donor
  6. Click Edit by the Donor Name
  7. Click Delete Record from Initiative
  8. Fill out Corresponding information
  9. Click Delete
Note: A full reversal removes the donor from the event but not from the database.