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Any Contracting State may propose amendment of this Convention. The text of a proposed amendment shall be communicated to the Secretary-General not less than 90 days prior to the meeting of the Administrative Council at which such amendment is to be considered and shall forthwith be transmitted by him to all the members of the Administrative Council.
(1) If the Administrative Council shall so decide by a majority of two-thirds of its members, the proposed amendment shall be circulated to all Contracting States for ratification, acceptance or approval. Each amendment shall enter into force 30 days after dispatch by the depositary of this Convention of a notification to Contracting States that all Contracting States have ratified, accepted or approved the amendment.
(2) No amendment shall affect the rights and obligations under this Convention of any Contracting State or of any of its constituent subdivisions or agencies, or of any national of such State arising out of consent to the jurisdiction of the Centre given before the date of entry into force of the amendment.
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