Overseas Compatriot Identity Certification Act Article 12

Where a person holds a valid passport with Overseas Compatriot Identity Endorsement, the valid effect of such Endorsement shall be the same as an Overseas Compatriot Identity Certificate during the validity period of the passport. This does not apply where other laws or regulations require submission of an Overseas Compatriot Identity Certificate.
中文原文 華僑身分證明條例第12條
持有僑居身分加簽之護照者,在護照有效期間內,該僑居身分加簽之效力與華僑身分證明書同。
但其他法規另有規定應提出華僑身分證明書者,不在此限。

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