Section 8(1) in The Indian Cost Accounts Service Rules, 2015
(1)The relative seniority of the Members of the Service on commencement of these rules shall be the relative seniority in their respect grades as determined before the date of such commencement:Provided that if the seniority of any Member of the Service had not been determined before the commencement of these rules, it shall be determined by the Government in accordance with the general instructions on seniority issued by the Government from time to time.
