Hi vxd_music. Welcome to the Community.
You can Exclude the transaction to remove the duplicates.
Just to clarify, when you say the PayPal transactions were posted twice, were they categorized or processed in the system, or were they imported twice but not yet categorized?
If the transactions are not yet categorized, you can Exclude them from the For review tab.
Here's how:
- Go to Accounting and select Bank Transaction.

- Select the account tile where the PayPal transactions are stored.
- From the For review tab, tick the checkbox for the duplicated transactions.
- Click the Exclude button.
If the transactions are already categorized, you can Undo the transaction to return them to the For review tab and Exclude them.
Here's how:
- Go to Accounting and select Bank Transaction.
- Select the account tile where the PayPal transactions are stored.
- From the Categorized tab, tick the checkbox of the duplicated transactions.

- Click the Undo button to return it to the For review tab.
- Once done, follow the steps above to Exclude the transactions.
This process allows you to correct the duplication without the need to reimport your transactions.
If you have more questions or need further assistance, don't hesitate to reply here.