Where, in connection with the transfer by Opco to its parent, Holdco, of property subject to debt in excess of the property's ACB, Holdco first assumes the excess debt in consideration for a promissory note of Opco, and then Holdco surrenders that promissory note to Opco in consideration for the redemption of preference shares issued by Holdco to Opco on the transfer, s. 85(1)(b) will not apply to alter the agreed amount (being the property's ACB), i.e., the allocation of the assumed debt as consideration for the promissory note of Opco rather than as consideration for the transfer of the property will be respected.