I do appreciate that you've made sure that the spreadsheet has the correct information, Drabkin.

Let's ensure that you're creating a new invoice after you imported your list of customers since QuickBooks Desktop won't retroact. If the invoice you'll be printing is an existing one prior to importing the customer list, let's edit it first and toggle it to the correct customer. 

Good job that you tried editing the invoice template. Ensure that the Print and Screen option in the Customers tab of the layout designer is checked.

Let me show you how:

1. From the opening invoice, click the template from the menu and select Edit Current Template.
2. In the Invoice Fields window, click the Customers tab. 
3. Check the Print and Screen window on Customers Name option.
4. Once done, click Save from the File menu.

We can also review the customer's profile to ensure that the name is correctly entered in the CUSTOMER NAME field. 

If the same thing happens we can troubleshoot PDF and Print problems with QuickBooks Desktop. 

Feel free to leave a reply below if you need more help. You take care and have a great day!