The filing of a registration statement with the Attorney General as required by the act shall not operate to remove the necessity for filing a registration statement with the Attorney General as required by the act of June 8, 1938, as amended, entitled “An act to require the registration of certain persons employed by agencies to disseminate propaganda in the United States and for other purposes” (52 Stat. 631, 56 Stat. 248; 22 U.S.C. 611), or for filing a notification statement with the Secretary of State as required by the act of June 15, 1917 (40 Stat. 226).