Administrative Litigation Act Article 114-1

If a district administrative court adjudicates a case through an ordinary proceeding because of a change in, or a partial withdrawal of, the plaintiff's claim, it becomes one of the categories that shall be adjudicated through small claims proceeding or traffic adjudication proceeding, the originally commissioned judge of the district administrative court shall adjudicate through small claims proceeding or traffic adjudication proceeding.If a case is adjudicated by a district administrative court through an ordinary proceeding because of an addition to, a change in, or a counterclaim, the case or a part of it becomes one in the category which a high administrative court shall adjudicate, the matter shall be transferred through a court ruling to the high administrative court with jurisdiction.If a case is adjudicated by a high administrative court through an ordinary proceeding, because of a change in, or a partial withdrawal of, the plaintiff's claim, the case becomes one in the category which a district administrative court shall adjudicate, the high administrative court shall transfer the case by a ruling to the district administrative court with jurisdiction.
中文原文 行政訴訟法第114-1條
地方行政法院適用通常訴訟程序之事件,因訴之變更或一部撤回,致其訴之全部屬於簡易訴訟程序或交通裁決事件訴訟程序之範圍者,地方行政法院應改依簡易訴訟程序或交通裁決事件訴訟程序之規定,由原受命法官繼續審理。
地方行政法院適用通常訴訟程序之事件,因訴之追加、變更或反訴,致其訴之全部或一部屬於高等行政法院管轄者,應裁定移送管轄之高等行政法院。
高等行政法院適用通常訴訟程序之事件,因訴之變更或一部撤回,致其訴之全部屬於地方行政法院管轄之事件者,高等行政法院應裁定移送管轄之地方行政法院。

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