(1) Subject to the following provisions of this Subdivision, at any time before a bankrupt is discharged from bankruptcy under section 149, the trustee may file with the Official Receiver a written notice of objection to the discharge.
(2) The trustee of a bankrupt's estate must file a notice of objection to the discharge if the trustee believes:
(a) that doing so will help make the bankrupt discharge a duty that the bankrupt has not discharged; and
(b) that there is no other way for the trustee to induce the bankrupt to discharge any duties that the bankrupt has not discharged.