FTI-TTP Member (granted status). New Passport how to update?

Hi I went thru the India Trusted Traveler Registration Process for my kids (USCiti/OCI) and was granted approval. My kids are going to be getting new passports, since theirs are due to expire next year.
Question: How do i update my kids passport in the FTI-TTP system? Or do I have to go thru the entire registration/Biometric process again?