Deleting duplicate entries is our top priority, usermyiphonectc.

You can exclude downloaded transactions if these are duplicates. You can follow the step below on how to do this:

1. Go to the Banking menu or Transactions menu, then select the Banking tab.
2. Select the For Review tab.
3. Select the checkbox of the transactions to exclude.
4. Select Exclude.
   

Once done, the transaction moves to the Excluded tab of the Banking page. Also, when you exclude a transaction, it doesn’t appear in any account registers or financial reports.

After you've excluded them, you can reimport the bank transactions.

Normally, QuickBooks download the latest transactions after you connect your bank and credit card accounts. You'll want to review downloaded transactions so you can add a new transaction or match it with an existing one. Please read this article for your reference: Categorise And Match Online Bank Transactions In QuickBooks Online.

Let me know if the steps I provided above works with your bank transactions. Please know I'll always be right here to help you,