The Equalization of Land Rights Act Article 67

The competent authorities shall, in accordance with the result of land consolidation, rearrange numbers of the consolidated lands, directly register the change in land rights and reissue the certificates of land rights. If the landowners or the holders of other rights over land fail to exchange their old certificates for new ones within the set time limits, the old certificates shall be declared null and void.
中文原文 平均地權條例第67條
經重劃之土地,重劃機關應依據重劃結果,重新編號,列冊送由該管登記機關,逕為辦理權利變更登記,換發土地權利書狀;未於規定期限內換領者,宣告其原土地權利書狀無效。

English translation for reference only; the Chinese text prevails. Not legal advice.