Cessation of order or appointment
17.  An order issued under section 11(1)(b) or 15(1) remains in effect until —
(a)it is revoked or varied under section 18 or 19;
(b)it ceases to be in force under section 20; or
(c)the property that is the subject of the order is returned to an applicant in accordance with the law or forfeited to the Government.