Be it further enacted, That the powers conferred by this Title VI shall be in addition and supplemental to, and the limitations and requirements of this title shall not affect the powers conferred by any general law with respect to the issuance of bonds or other obligations of the city, and are not in substitution for the powers conferred by any general law. Bonds may be issued under any existing or future general law of the State of Tennessee for any purpose authorized thereby notwithstanding that this title may provide for the issuance of bonds or other obligations for a like purpose, and such bonds or other obligations may be issued under any such general law without regard to the requirements, restrictions or other procedural provisions contained in this Act or in this title. [As added by Priv. Acts 1963, ch. 74, § 10]