317. Any unfunded actuarial liability resulting(1) from an amendment to the plan that is an amendment referred to in section 313 or 314 made for the purpose of bringing the plan into conformity with Chapter IV, V or VI, or
(2) from an amendment to the plan made for the purposes of the application of section 44, 45, 60, 69 or 86 to benefits accumulated in respect of service credited under the plan before 1 January 1990,
constitutes an improvement unfunded actuarial liability.
Such an improvement unfunded actuarial liability may be considered to be an initial unfunded actuarial liability.