Subsequent amendments
(d) Subsequent amendments. (1) Except as provided in paragraph (d)(2) of this section, a post-effective amendment that includes a prospectus shall not become effective under paragraph (a) of this section if a subsequent post-effective amendment relating to the prospectus is filed before such amendment becomes effective. (2) A post-effective amendment that includes a prospectus shall become effective under paragraph (a) of this section notwithstanding the filing of a subsequent post-effective amendment relating to the prospectus, Provided, that the following conditions are met: (i) the subsequent amendment is filed under paragraph (b) of this section; and (ii) the subsequent amendment designates as its effective date either: (A) the date on which the prior post-effective amendment was to become effective under paragraph (a) of this section; or (B) a new effective date designated under paragraph (b)(1)(iii) of this section. (3) Notwithstanding paragraphs (d)(1) and (d)(2) of this section, if another post-effective amendment relating to the same prospectus is filed under paragraph (a) of this section before the prior amendments filed pursuant to paragraphs (a) and (b) of this section have become effective, none of such prior amendments shall become effective under this section.