Thanks for the additional information, riedabook.
The INV you’ve provide has already been closed. Though, i can check if there’s an ongoing investigation about this. I just need to know your bank so I can search it easily. Sometimes, duplicate transactions are due to issues on the bank side. The way we fetch data for transactions that change date and/or descriptions within your bank's website can also caused this.
You can exclude duplicate transactions in QuickBooks Online through the steps below:
Please take a look at this article for further information: https://quickbooks.intuit.com/learn-support/en-us/bank-transactions/exclude-expenses-from-downloaded...
Looking forward to your response. I'll be around to help.