(2)is appointed substantively to a tenure post the time-scale of which has been reduced without a diminution in the duties or responsibilities attached to it, and has previously held substantively or officiated in another tenure post on a time-scale identical with the unreduced time-scale of the tenure post,then the initial pay shall not be less than the pay, other than special pay, personal pay or emoluments classed as pay by the Governor under rule 9(21)(iii) which he would have drawn under rule 22 on the last such occasion if the reduced time-scale of pay had been in force from the beginning and he shall count for increments the period during which he would have drawn that pay on such last and any previous occasions:Provided further that the initial pay of a government servant who was in service on January 1, 1922, shall not be less than the initial pay admissible to him under rule 22.