17. Duration of a section 229 decision or a section 962 decision

(1) A section 229 decision shall continue to have effect until:
(a) either:
(i) the section 229 beneficiary; or
(ii) his personal representative,
has notified the Registrar in writing that he wishes the section 229 decision to cease to apply; or
(b) the Registrar has made a revocation decision in relation to that beneficiary,

whichever first occurs.
(2) A section 962 decision shall continue to have effect until the Registrar has made a revocation decision in relation to the section 962 beneficiary.