Hello there, @ AmericanRV.

In printing a purchase order, let's make sure to select the specific purchase order in the vendor center. It's possible that you may print other purchase order that is pending to be printed.

Here's how:

1. Go to the Vendors menu then click Vendor Center.
2. Choose a specific vendor and open the purchase order associated with it.
3. Under the Main tab, select Print.
4. You can preview your purchase order or choose the Purchase order option then press Print to continue

Here's an additional article to know more on how to customize form templates in QuickBooks Desktop: Customize form templates in QuickBooks Desktop.

Don't hesitate to keep in touch if there's anything else we can do for you. You’re always welcome to visit us anytime.