Mods, please move to a more appropriate forum if needed.

I'm trying to find out if there will be an issue at checkin for the following situation:

1. Mother and minor daughter planning travel USA to India in late January 2016.

2. Both are US Citizens, both with PIO cards.

3. Daughter recently got a new passport upon expiry of the old one.

4. PIO lists previous, expired passport number.

5. Consulates no longer endorse/update PIO's with new passport number, since new PIO's no longer being issued, and advising conversion to OCI.

6. Consulate told me that if they carry old and new passports plus PIO, there will be no issue at immigration in India, BUT that the airline may refuse boarding since current passport number is not in the PIO.

7. They advised applying for OCI, which we will do, but that will not process prior to the trip.

I don't envision it to be a problem, but can't take that <5% chance that an overzealous and/or uninformed checkin agent could cause issues or refuse boarding.

So the question is, does TIMATIC have any specific guidance for this situation, i.e., does it say that old+new passports plus PIO (with old passport number) is valid for travel to India? If so, then they are good.

Anyone that can provide the full text/guidance from TIMATIC for this situation?

Summary: US passport holder/US resident traveling USA to India; PIO card shows expired passport number; traveling with both expired and new passport.

Thanks!