Is there a way to import journal entries?

Welcome to the Community, @Morgan.

Fiat is correct. Using an importer tool, you can import your journal entries into QuickBooks Online (QBO). You can consider using a third-party app to bridge NetSuite to QBO, as the feature to import data directly is currently unavailable. 

Here are the steps if you wish to browse for a third-party app:

1. Access your QuickBooks Online company.
2. On the left navigational bar, go to the Apps tab.
3. In the search bar, type "Importer" as your keyword.
4. Once you find the app that best suits your business needs, click the app.
5. Click the Get app now button.

You can visit the Intuit App store should you want to import data using third-party applications.

I would also recommend connecting with Netsuite Support. This way, they can help you set up your data so you can get them to your QuickBooks.

You can visit this article to learn how to reverse a journal entry to swap the debits and credits or delete it entirely: Reverse or delete a journal entry in QuickBooks Online.

If you have further concerns about your import journal entry, don't hesitate to post them here. Stay safe!