Immigration Act Article 93

The provisions of this Act that concern aliens shall apply mutatis mutandis to nationals who have acquired a foreign nationality and have entered the State with a foreign passport, and stateless persons.
中文原文 入出國及移民法第93條
本法關於外國人之規定,於國民取得外國國籍而持外國護照入國者及無國籍人民,準用之。

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