Sec. 13G. INTERPRETATION OF CERTAIN RISK SHARING PROVISIONS; UNILATERAL DECISIONS AND ACTIONS PROHIBITED. (a) Nothing in this article, including Section 2(p) or (p-1) of this article and any authority of the board to construe and interpret this article, to determine any fact, to take any action, or to interpret any terms used in Sections 13A through 13F of this article, may alter or change Sections 13A through 13F of this article.

(b) No unilateral decision or action by the board is binding on the municipality and no unilateral decision or action by the municipality is binding on the fund with respect to the application of Sections 13A through 13F of this article unless expressly provided by a provision of those sections. Nothing in this subsection is intended to limit the powers or authority of the board.

(c) Section 10 of this article does not apply to a benefit increase under Section 13E of this article, and Section 10 of this article is suspended while Sections 13A through 13F of this article are in effect.