485.11. Subject to section 485.18, where a commercial obligation issued by a debtor is settled at any time in a taxation year and amounts have been designated by the debtor under sections 485.6 and 485.8 to 485.10 to the maximum extent permitted in respect of the settlement of the obligation, the remaining unapplied portion of the forgiven amount in respect of the obligation is to be applied (to the extent that it is designated in a prescribed form filed with the debtor’s fiscal return under this Part for the year) to reduce immediately after that time the adjusted cost bases to the debtor of(a) shares or debts that are capital properties, other than excluded properties and properties the adjusted cost bases of which are reduced at that time under section 485.9 or 485.10, owned by the debtor immediately after that time; and
(b) interests in partnerships that are related to the debtor at that time that are capital properties, other than excluded properties, owned by the debtor immediately after that time.