company info

Welcome to the community, Mikeridenour.

Sounds like you may need to make sure you're changing the information in your company and, the Invoice template is correct?

You're able to change the information for your company by clicking, Company> My Company> The pencil icon. One there, you can change the street address of the company that is used for the invoice. 
Once that's done, check the invoice template. With QuickBooks Desktop you have the ability to customize the template to your specific needs and even check that the address is correct. If you have any questions I'm here to help. 

I signed in and just edited the invoice template(s). 

I did not edit the company info, nor did I look to see if it was correct or not. I did get a notification asking me if I wanted to edit the company info, but I declined. 

So, I just added the line of the street address in the edit template.

I can't think where (or whom) the line is getting omitted every 3 or 4 months or so.