I have finally found something that works. I do not understand it, but here is the fix I am doing to make the Contact information pull into the Word Envelope correctly using the Insert Outlook address button.
In Outlook People, I pull up the individual contact. On the Ribbon, I select Contact, Show, All Fields. Select From "Frequently-Used Fields" and go down and remove the country information. Click off of the Country/Region field, and click Save. I close out of the individual contact, return to Envelope in Word and use the insert button and select that contact. It pulls in correctly now with the company information on the second row. I don't understand it, but I've edited about 15 contacts this afternoon, and they all work correctly now.
I appreciate your help. Thanks.