Notwithstanding any other provision of this Act [sections
2061 to
2171 of this Appendix], the termination of title VI [sections
2132 to
2137 of this Appendix] or any section thereof shall not be construed as affecting any obligation, condition, liability, or restriction arising out of any agreement heretofore entered into pursuant to, or under the authority of, section
602 or section 605 of this Act [section
2132 or
2135 of this Appendix], or any issuance thereunder, by any person or corporation and the Federal Government or any agency thereof relating to the provision of housing for defense workers or military personnel in an area designated as a critical defense housing area pursuant to law.