Sec. 1A. INTERPRETATION OF ARTICLE. This article, including Sections 2(p) and (p-1) of this article, does not and may not be interpreted to:

(1) relieve the municipality, the board, or the fund of their respective obligations under Sections 13A through 13F of this article;

(2) reduce or modify the rights of the municipality, the board, or the fund, including any officer or employee of the municipality, board, or fund, to enforce obligations described by Subdivision (1) of this section;

(3) relieve the municipality, including any official or employee of the municipality, from:

(A) paying or directing to pay required contributions to the fund under Section 13 or 13A of this article or carrying out the provisions of Sections 13A through 13F of this article; or

(B) reducing or modifying the rights of the board and any officer or employee of the board or fund to enforce obligations described by Subdivision (1) of this section;

(4) relieve the board or fund, including any officer or employee of the board or fund, from any obligation to implement a benefit change or carry out the provisions of Sections 13A through 13F of this article; or

(5) reduce or modify the rights of the municipality and any officer or employee of the municipality to enforce an obligation described by Subdivision (4) of this section.