The Servicemember Relief Act Article 22

In the case that a petitioner deceases after the petition is filed, the heir(s) or other people legally entitled to succeed the rights or legal interests derived from the original administrative disposition may declare the assumption of the petition. However, if there is no legal interest derived from the petition decision or the petition is prohibited from being assumed due to its nature, the assumption is barred.In the event of the assumption stipulated in the preceding paragraph, the certification of the succession of right shall be submitted to the Protection Committee within 30 days from the occurrence of the succession fact.Where the person entitled to the assumption stipulated in Paragraph 1 fails to declare the assumption of a petition, the Protection Committee, upon being aware of the grounds for assumption, shall notify the person to assume the petition. If the person still fails to declare the assumption after the notification, the Protection Committee may order the person to continue the petition.
中文原文 軍人權益事件處理法第22條
復審提起後,復審人死亡者,由其繼承人或其他依法得繼受原行政處分所涉權利或法律上利益之人承受復審程序。
但已無取得復審決定之法律上利益或依其性質不得承受者,不在此限。
依前項規定承受復審者,應於事實發生之日起三十日內,向權保會檢送繼受權利之證明文件。
依第一項規定得承受復審者未聲明承受復審,權保會於知悉得承受事由時,應通知其承受復審,經通知後未聲明承受復審者,得命其續行復審。

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