(1) This section applies if the Secretary or the ART (the review body ) is reviewing a decision for the purposes of this Chapter.
(2) If the review body is satisfied that an event did not happen that would have happened if the decision had not been made, the review body may, if satisfied that it is reasonable to do so, determine that this Act is to apply as if the event had happened.
(3) If the review body is satisfied that an event happened that would not have happened if the decision had not been made, the review body may, if satisfied that it is reasonable to do so, determine that this Act is to apply as if the event had not happened.