(1) The Central Government may, if it is of opinion that it is expedient so to do, by notification, 1 [add or delete any entry to or from any Schedule] or transfer any entry from one Part of a Schedule to another Part of the same Schedule or from one Schedule to another.
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(3) On the issue of a notification under sub-section (1) 3 ***, the relevant Schedule shall be deemed to be altered accordingly, provided that every such alteration shall be without prejudice to anything done or omitted to be done before such alteration.
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Provided that any such alteration made by the State Government, if it has been made with the previous consent of the Central Government, shall prevail in that State:
Provided further that nothing in the foregoing proviso shall prevent the Central Government from modifying or cancelling, at any time, the alteration made by the State Government.