223.—Nothing in this Act shall affect the validity of any act that was done before the commencement of section 159 by or on behalf of a board of management or trustees of a certified reformatory school or industrial school to which on such commencement subsection (1) of that section applies, and every such act shall, if and in so far as it had effect immediately before such commencement, have effect on and after the commencement as if it had been done by or on behalf of the board of management appointed to the school under section 164.