Hello there, @questions2023.
I want to ensure you're able to manage your bank accounts and transactions in QuickBooks Online (QBO). But, I have to gather some information about your concern to ensure I can provide the best solution. Can you share the name of your financial institution? Are you trying to exclude your duplicate transactions?
While we wait for the information, you can learn more about reviewing downloaded bank and credit card transactions in QBO by checking out this article: Categorize and match online bank transactions in QuickBooks Online.
Keep me updated in the comments below. Hope to hear from you as soon as possible. Take care and stay safe!
