Family sharing receipts going to old Apple ID email address

I recently changed my email address associated with my apple id. Receipts for my purchases are going to the new email. Receipts for my kids's purchases, who have their own apple ids and are on our family sharing plans, go to my old email. I can't figure out why this is happening. I've checked everything on icloud and itunes (including billing info on my account) on both our iphones and everything seems to be pointing to my new address.

Any ideas on where to look for the old setting?

Thanks.