Why would a bank deposit be listed in the register as both a debit and credit?

I recently received a refund from vendr for a double payment made in 2023. I deposited the check but did not make a transaction in quickbooks. Now, when trying to reconcile the account, QBO wants to add both a Debit and Immediate credit into our bank account. I can't find a way to eliminate the "Debit" entry without eliminating the CR entry as well.