Union 76 Credit Cards?

Recently, both Chevron and Union76 reissued cards/accounts based on mysynchrony.com/Synchrony Bank. By choosing Chevron/Texaco as an "add account," both of my accounts with correct account numbers can be added; I name them based on each oil company's name. Union 76 is not an available choice to add. My Chevron account balance appears correct after a sync/update, but not Union 76. As an example it shows a $109 balance when in fact it is $50, and verifiable when using my phone's app to the account. Short of making Union76 solely a manually entered account (tedious) how can I revise the balance to show the true amount? Is there a way to edit current balance, then when it syncs it will come out correct? Using phone app helps me verify the current balance, but that's what I have Quicken for.