Any board, commission, council, committee or other agency which has been established or designated to investigate allegations of discriminatory practices by the charter or an ordinance of any town, city or borough prior to May 23, 1980, may assume the powers granted to such agencies under sections 7-148i to 7-148n, inclusive, and subparagraph (B) of subdivision (9) of subsection (c) of section 7-148 if the charter or ordinance creating or designating such agency is not in conflict with the provisions of sections 7-148i to 7-148n, inclusive, and subparagraph (B) of subdivision (9) of subsection (c) of section 7-148.