Section 10(2) in The Indian Foreign Service Branch 'B' Rules, 2017
(2)Notwithstanding anything contained in sub-rule (1) any vacancy in Grade I of the General Cadre may, in exceptional cases and in public interest, be filled by the Controlling Authority, in consultation with the Commission, by absorption of an officer holding a permanent Group 'A' ex-cadre post in the Ministry of External Affairs.
