With regard to the validity period of a residence card (meaning a residence card prescribed in Article 19-3 of the Immigration Control and Refugee Recognition Act (referred to as the "Immigration Control Act" in paragraph (3)); hereinafter the same applies in this Article and Article 4 of the Supplementary Provisions) issued before the effective date of this Act (hereinafter referred to as the "Effective Date"), the provisions then in force continue to govern.