462.3. For the purposes of sections 462.1 and 462.2, where, at any time, an individual has loaned or transferred property, either directly or indirectly, by means of a trust or otherwise, to or for the benefit of a person, and the loaned or transferred property or property substituted therefor is used to repay, in whole or in part, borrowed money with which other property was acquired, or to reduce an amount payable for other property, there shall be included in computing the income from the loaned or transferred property, or from any property substituted therefor, that is so used, the amount determined under section 462.4.
However, nothing in this section shall affect the application of sections 462.1 and 462.2 to any income or loss derived from the other property or from any property substituted therefor.