Application of certain rules

Any rule continued by article 313 or made under the proviso to article 309 of the Constitution in respect of any service or category thereof shall be applicable to all persons holding posts intended to be held by members of that service or category on the date on which such rule was made: Provided that nothing in any such rule shall, unless a contrary intention is expressly indicated therein, operate to deprive any such person of any right or privilege to which he is entitled by or under any rule or applicable to him prior to the making of such rule: Provided further that no such rule shall be applicable to candidates who had been approved for appointment to any such service or category by the Commission or by any other authority competent in that behalf prior to the making of such rule or who had applied for such approval in response to any advertisement inviting applications, published by the Authority competent in that behalf prior to the making of such rule.