Customs exemption amendment narrows applicability, excludes specified goods and inserts a tariff entry with nil duty. The amendment substitutes a proviso to exclude goods specified under S.No.46D from the notification's benefits from the stated cut off date, omits S.No.46C, and inserts S.No.46D identifying goods under tariff heading 8528 (cross referenced to S.No.316D of Notification No.21/2002 Customs) with a nil duty entry.