Hi there, Dave0413.

QuickBooks automatically fills in the ship date based on the the invoice date. Let's make sure that the Ship Date field is selected in the invoice template. Here's how:

1. Open the invoice.
2. Click on the Formatting tab. 
3. Select Customize Data Layout. 
4. In the Header tab, check the Screen and Print boxes for the Ship Date option.
5. Click on OK.

Go ahead and create the invoice again.

If the ship date still shows a different date, let's run the Verify and Rebuild Data tool. It helps to resolve minor issues in QuickBooks like this one. 

I can offer more help if you have any questions.