You can use a third-party app in QBO by going to the QuickBooks Apps and selecting a service provider to help you safely import your data. From there, enter a keyword to choose the best app that you require. Before clicking the Get App Now button, I would also like to suggest reading your application's information.
Once your file is ready and ready to import your data in QBO. You can follow the steps below:
Let me know by clicking the reply button if you have additional questions about loading files into your QBO account. I am just a post away. Have a nice day ahead!