Section 144.103 of this subchapter and §§ 146.111 through 146.119, 146.143, and 146.145 are applicable for plan years beginning on or after July 1, 2005. Notwithstanding the previous sentence, for short-term, limited-duration insurance sold or issued on or after September 1, 2024, the definition of short-term, limited-duration insurance in § 144.103 of this subchapter applies for coverage periods beginning on or after September 1, 2024. For short-term, limited-duration insurance sold or issued before September 1, 2024 (including any subsequent renewal or extension consistent with applicable law), the definition of short-term, limited-duration insurance in 45 CFR 144.103, revised as of October 1, 2023, continues to apply, except that paragraph (1)(ii) of the definition of short-term, limited-duration insurance in § 144.103 applies for coverage periods beginning on or after September 1, 2024.