Foreigners in Philippines with permanent resident status need to re-stamp passports
BI URGES ALIENS TO REPORT TO BI OFFICES FOR PASSPORT RE-STAMPING
MANILA, Philippines – All foreign nationals and their dependents who are staying in the Philippines with a permanent resident status by virtue of Republic Acts 7919 and 8247, are required to report to the Bureau of Immigration in Intramuros Manila for re-stamping of their passports, or risk being penalised or worse, face deportation and cancellation of their Alien Certificate of Registration (ACR) I-cards.
Source