Hi, @dataforge. I appreciate you for following the steps provided by my colleague above.

I’m here to help you fix this issue about printing all open invoices in QuickBooks Online.

You can pull up an Open Invoice report so you’ll be able to print all of your open invoices sorted by customer. Let me show you how:

1. On the left panel, click Reports.
2. In the search bar, type in Open Invoices.
3. You can filter the details you need by clicking Customize then Run report.
4. Select the Printer icon.
5. You can also adjust your print settings.
6. Select Print.
   
   

I'm adding some screenshots below for your visual reference:

You can also check these articles for more details about: 

• Customize Your Reports In QuickBooks Online.
• Memorize Reports.

 
If you have any further questions or concerns about reports in QBO, I'm here to help you in any way I can. Enjoy your day!