Anti-dumping duty rescission: provisional notification withdrawn after imposition of final duty on steel billets, bars and rounds. The central authority rescinds the provisional anti-dumping notification on alloy and non-alloy steel billets, bars and rounds upon imposition of a final anti-dumping duty, replacing provisional measures with final duty measures. The rescission expressly preserves all acts or omissions done before the rescission, so prior actions under the provisional notification remain unaffected.