Drawback rules amendment reduces security requirement and removes the schedule, altering rule cross references and scope. Amendment to the Customs and Central Excise Duties Drawback Rules, 1971 omits the Schedule, deletes clause (e) of rule 2, removes the phrase referencing the Schedule from rule 3(1), and lowers the monetary threshold in rule 7A(1); all changes take effect on 1 June 1993 under the statutory powers cited.