Rescission of customs notification: a prior anti-dumping notification withdrawn while preserving prior acts and omissions. The Central Government, invoking the power under section 9A of the Customs Tariff Act, 1975 read with the anti-dumping procedural rules, rescinds Notification No. 91/2001-Customs by issuing Notification No. 112/2002; the rescission operates prospectively but preserves the validity of acts done or omitted before the rescission.