Thanks IrishNinoJ! It worked. One additional question.
Wells Fargo changed my business credit card from Visa to Mastercard in March. Quickbooks is asking me to confirm dozens of credit card transactions that I have previously confirmed and assigned. As though the previous assignments - made for the Visa card - never happened. Even these previous assignments are still reflect in my list of expenses.
How can I clean up my bank transactions/credit card page?
It seems like QuickBooks Online is treating the new Mastercard as a completely separate card from the old Visa card, even though they are linked to the same account. Let me go further into this matter for you.
When you change from Visa to Mastercard, it triggers QuickBooks to establish a new connection, so those first 90-day transactions were downloaded again.
Since you've already confirmed and assigned them before, you can exclude them to avoid duplicate entries. Here's how:
Go to Transactions, then select BankTransactions.
Choose the For Review tab.
Select the checkbox of the transactions to exclude.