New Town Development Act Article 28

For the lands within a new town special area, where the mortgage rights have been set before zone expropriation and the lands are got back after zone expropriation is implemented, the authority shall invite the obliges to make negotiations before handling registration of land entrusting. Unless the right is eliminated according to the result of the negotiation, the rights shall be listed and the list shall be sent to the governing department in charge of registration, for the department to make registration according to the original registration sequence upon returning the lands. For registration of mortgage rights for the lands distributed in a combined mode, the range of rights and interests shall be calculated according to the interest value of the lands before zone expropriation is executed.
中文原文 新市鎮開發條例第28條
新市鎮特定區範圍內土地,區段徵收前已設定抵押權,而於實施區段徵收後領回抵價地者,主管機關應於辦理土地囑託登記前,邀集權利人協調,除協調結果該權利消滅者外,應列冊送由該管登記機關,於發還抵價地時,按原登記先後,登載於領回之抵價地。
其為合併分配者,抵押權之登載,應以區段徵收前各宗土地之權利價值,計算其權利範圍。

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