Regulations of the Land Registration Article 115-2

In the case of the application of registration for changing the maximum amount of mortgage right to regular mortgage right due to the confirmation of the original obligatory right, the pledger, mortgagee, and the obligor shall jointly apply for the registration for the change of right according to the actual amount of obligatory right.The amount of obligatory right that concerns the above-mentioned application of registration may not exceed the originally registered maximum amount.
中文原文 土地登記規則第115-2條
最高限額抵押權因原債權確定事由發生而申請變更為普通抵押權時,抵押人應會同抵押權人及債務人就結算實際發生之債權額申請為權利內容變更登記。
前項申請登記之債權額,不得逾原登記最高限額之金額。

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