The Farmers Association Act Article 11-5

After the merger, the newly merged Farmers’ Association shall apply to the competent authority for establishment or modification of registration; and the competent authority shall simultaneously revoke the registration of the pre-merger associations.
中文原文 農會法第11-5條
合併後農會應向主管機關申請設立或變更登記;主管機關應同時廢止被合併農會之登記。

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