Since the PIO card was originally issued, if your passport has expired and if your PIO card is still valid, you can get new passport number endorsed in the PIO card by presenting at the count the old and new passport and PIO card or can be mailed with a forwarding letter.

There is no fee for this service.

Procedure by mail may take 7 to 10 days.

If presented in person between 9 AM and 12:30 PM, the service is rendered the same day.

In case you don't have enough time to get the endorsement done in the PIO card, due to urgent travel, you can carry both, the new and the old passport, along with PIO card for smooth check in/out at immigration points.