(1) Where any right or obligation created before the 6th day of April, 1976, is expressed by reference to a dividend at a gross rate or of a gross amount, that right or obligation shall, in relation to a dividend payable on or after that date and before the 6th day of April, 1999, take effect as if the reference were to a dividend of an amount determined by the formula -
where -
A is the standard credit rate per cent for the year of assessment in which the dividend is paid, and
D is an amount equal to a dividend at that gross rate or of that gross amount.
(2) Subsection (1) shall apply with the necessary modifications to a dividend partly at a gross rate or of a gross amount and shall apply to any distribution other than a dividend as it applies to a dividend.