I am having a similar problem. Under "Company Information" - my "Legal Information" is correct. Somehow in "Contact Information" my street address and suite have been removed. When I enter the information, I receive the following error: "You did not update your Legal Address. QuickBooks uses this information when it creates paychecks and payroll tax forms. The information needs to be current. Do you want to go back and update the information in the Legal Address section?" It becomes an endless loop. The result is my invoices do not have my complete address on them. My information is correct everywhere else.
