Secondly, consequent on the said decision of the Tribunal, the Railway Board issued certain instructions on 22.12.88 which reads thus: "Consequent upon the judgment given by the Central Adminis trative Tribunal in connection with the above, matter has been reviewed in consultation with the representatives of the recognised organised federations and it has been decided in partial modification of the orders contained in Railway Board 's letters . . dated 28.5.83 and 6.11.84 that the integrated seniority of group C employees for promotion to group B posts should be determined on the basis of con solidated length of non fortuitous service rendered in the grade of Rs.700 900/2000 3200 and above ignoring promotions to the grade of Rs.840 1040/23753500 . " It may be mentioned that the petitioners were fully satisfied with the circular of 5.3.83 which according to them, gave effect to rule 321 of the Indian Railway Estab lishment Manual.