This process is applicable to you if you have already installed Smart Completions previously with WIX setup.
Ensure that you have already taken back up of all the Config files.
Web.config, saml.config - SC_Installed_Folder>Config - "SC_Installed_Folder>bin"
config - "SC_Installed_Folder> bin"
config.json - SC_Installed_Folder> API> bin
Uninstall existing WIX
Install the latest WIX- Install Smart Completions
Copy the saved Config files to the latest installed folder