The Anti-Corruption Informant Rewards and Protection Regulation Article 14

Any and all cases accepted by reports prior to the amendment and enactment of this approach shall be awarded with the Prize pursuant to the regulations which were in effect then.
中文原文 獎勵保護檢舉貪污瀆職辦法第14條
本辦法修正施行前受理之檢舉案件,依受理檢舉時之規定給與獎金。

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