This installation process is applicable if you have been using Smart Completions SaaS version already, and want to upgrade to the product with the latest WIX set up.
If the Database and the Setup are on the same system, then select both the options while installation as shown below. You must select the existing site folder in the path to upgrade the application.
The site name must be the same as the existing site name in IIS, which you are upgrading.
If you have separate Database system and IIS system, then you need to install the set up on both the machines and select the options accordingly as shown here.