Can I still fly to Pakistan if my passport number on my Pakistan Origin Card does not match my current passport number?
I think you can (but would be worth checking!) since there is no qualification of:
- Seven years card validity (except foreign spouse)
at High Commission for Pakistan London. (The foreign spouse exclusion merely is to limit the validity to five years.)
Timatic is not very helpful with:
Visa required, except for Passengers with a Pakistan origin card (POC) or a national ID card for overseas Pakistanis
since there is no mention of the numbers having to match (though lack of that is a good sign, in a way).