If an amendment to the application for registration of a security is filed with the exchange and with the Commission after the receipt by the Commission of the certification of the exchange approving the security for listing and registration, the certification, unless withdrawn, shall be deemed made with reference to the application as amended.
17 C.F.R. §240.12d1-5
Sec. 12, 48 Stat. 892, as amended; 15 U.S.C. 78l