Hi chupeng,
Welcome to Community! It's great to hear that you've linked your bank and credit card accounts to QuickBooks Online. However, when duplicate transactions appear, it can be quite concerning. I would be glad to assist!
The first step is to confirm if duplicate transactions have been downloaded. I suggest taking a look at your bank statement on your bank's website, to review possible duplicate transactions there. If the statement indicates duplicate transactions, your automatic upload to QuickBooks was accurate and aligned with your bank. However, if no duplicates are found, you'll want to remove the duplicate entries from your bank feed in QuickBooks Online. Here's how;
1. From the Review tab, checkmark the box beside all duplicated entries
2. Select Exclude
Note: You can permanently delete the transactions from the Excluded tab by selecting all items and then hit Delete. Please be advised that this process is irreversible and any transactions deleted in error will need to be recreated manually.
Feel free to reach back out with other questions. We would be happy to help!
