You can batch remove the duplicate transactions based on their location, mkenison. I'm here to provide further details.

Before making any changes, it’s advisable to save a backup copy of your file to ensure you have a restore point in case any issues arise.

If the transactions are still in the NEED YOUR REVIEW tab, you can batch remove or ignore the transactions. Here's how:

1. Go to Banking, then Bank Feeds and select Bank Feeds Center.
2. Choose the bank's tile and click the Unrecognized tab.
3. Tick the transactions you want to remove.
4. In the Batch actions dropdown, choose Ignore.

On the other hand, if the transactions are already categorized, you'll have to manually remove it one at a time.

Please refer to this article for more details: Remove duplicate transactions in QuickBooks Desktop.

Also, you can consider disabling the bank feeds so that the other bank can stop getting duplicate transactions.

Additionally, you can check this article about automizing your bank transaction's categorization: Create rules to categorize transactions in QuickBooks Desktop.

Let us know if you have other concerns with deleting your transactions in QuickBooks Desktop, mkenison. We're here to help you in any way we can.