11. Where an actuarial valuation determines the value of additional obligations arising from an amendment to the pension plan, the provisions of the first paragraph of section 139 of the Act apply with the following modifications:(1) a special improvement payment must be paid into the pension fund, regardless of the pension plan’s funding level;
(2) the value of the additional obligations, at the date of the valuation, is equal to the higher of the value of additional obligations that is calculated on a solvency basis and the value of additional obligations that is calculated on a funding basis.