With reference to the changes to be effected in GST rates with effect from 22nd Sep., it is said that dealers have to reverse the differential ITC / GST amount in connection to the stock in hand as on that day with reference to those goods, whose rate of tax has been brought down. But, for those goods, for which the GST rate has been revised upward, what should be done for the ITC / GST amount in connection to the stock in hand on that day.