(1) The Registrar may, on his or her own initiative, reconsider a reviewable decision if the Registrar is satisfied that there is sufficient reason to reconsider the decision.
(2) The Registrar may reconsider a decision even if:
(a) an application for reconsideration of the decision has been made under section 620-5; or
(b) if the decision has been affirmed, varied or set aside under section 620-5--an application has been made under section 623-1 for review of the decision.
(3) After reconsidering the decision, the Registrar must:
(a) affirm the decision; or
(b) vary the decision; or
(c) set the decision aside and substitute a new decision.
(4) The Registrar's decision (the decision on review ) to affirm, vary or set aside the decision takes effect:
(a) on the day specified in the decision on review; or
(b) if a day is not specified--on the day on which the decision on review was made.