How can I pull in data from WooCommerce further back than the system allows?

You need a 3rd party app to do so. Otherwise, you can import historical data as Sales Receipts.

Hi there, @ei-thcuniversity.

I'm here to give some pointers on how to pull up historical data in QuickBooks Online.

We can choose and pull past data between WooCommerce and QuickBooks easily, including orders, customers, products, and more! However, if the system refuses to get data from years ago, we utilize a third-party application suggested by @Fiat Lux - ASIA above. 

Feel free to visit our Apps Center to find an application that fits your business task. 

Here's how:

1. Sign in to your QuickBooks account.
2. On the left pane, choose the Apps tab.
3. Click the Find Apps section.
4. Then, look for an application in the search bar.

Furthermore, I've include this article for a list of frequently asked questions about importing data into QuickBooks Online. It consist a detailed instruction with importing your customers, vendors, products and services, invoices, and bills: Common questions about importing data to QuickBooks Online.

If you have other concerns about importing data, please share them in this thread. I'm also willing to provide how to import and export files from QuickBooks. Have a nice day.