
The details of the sire will be in the KC database as they a re after the title so that is what the pups records at the KC will say, so your original document won't matter.
Exactly the same as the Registrations of my two champion girls don't have their titles on because they are the ones I was sent when they were babies, yet when they are entered at shows or have had their own pups registered their titles are there, same as the updated eye tests etc.
So my long winded answer is that anyone with a pup should alter their own records and include the relevant titles on pedigrees and entries.