This Act comes into effect on January 1, 1992; provided, however, that the provisions amending Articles 4 through 6 of the Supplementary Provisions and the provisions of Article 7 of the Supplementary Provisions come into effect on June 1, 1991, and the provisions of Article 4 of the Supplementary Provisions (excluding paragraph (3)) and Article 6 of the Supplementary Provisions (excluding the part that applies mutatis mutandis the provisions of Article 3 and Article 4, paragraph (3) of the Supplementary Provisions) come into effect on November 1 of that year.