The provisions of section 4 A, section 5A, in so far as they relate to revision of minimum rates of wages, and of sections 12 to 30 A of the said Act, and the rules made thereunder shall apply to minimum rates of wages specified in section 3 as they apply to minimum wages in respect of scheduled employments fixed in accordance with the said Act; 824 Provided that with respect to claims arising out of payment of minimum rates of wages specified in section 3 pertaining to a period prior to the publication of the Madhya Pradesh Minimum Wages Fixation Ordinance, 1962 (4 of 1962) in the Gazette, the period of one year referred to in the first proviso to sub section (2) of section 20 of the said Act shall be counted with effect from the 21st June, 1962, the date of the publication of the said Ordinance in the Gazette.