PIO card for Minor

[ra_one_2011]

My son got british passport who was on Indian passport previously, his indian passport has been surrender, but his both parents are on indian passport. so I am applying for PIO for him just now as he wont get OCI yet.
JUst want to confirm what documents I will require.
I was told by Indian cosulate that I will need to send parents passport along with application, but on indian consulate website it say to send only his surrender certificate and his british passport.
I think because he was on indian passport before my son should be able to apply for PIO on that basis instead of proving his parents nationality.
Is this right?
any help will be appreciated.

[VR]

This is for british naturalization. Mod can move to the correct forum. Meantime you can get all the info on this here

http://www.hcilondon.in/pio.html

cheers
vr