Hello there, sharon-t2marketi.
While we don't have a direct tool to transfer data from Freshbooks to QuickBooks, you can consider checking for third-party apps that handle data conversion between QuickBooks platforms. As a way around, you’ll want to look for a third a party app that lets you import more than one IIF file at the same time. You can go to the Apps Center. We can only import bank transactions using CSV (Comma-Separated Values) file. You can also check with Freshbooks if you can get a CSV file of your bank transactions or if they support importing.
You can refer to this article for the detailed steps and additional information: How To Import Bank Transactions Using Excel CSV Files.
If available apps are not suitable for you, you can bring over the lists by using Excel/CSV files. You can check these articles for more information:
Please feel free to reach out to me here should ever need a hand with QuickBooks, I want to ensure your success. Take care and have a wonderful day!