Upgrading Virto Cross Site Lookup
If you already use Virto Cross-Site Lookup and need to upgrade it to the latest version, download the package for your SharePoint version:
Unzip the file and run the setup program (see Installing Virto Cross Site Lookup).
On the step 3 check the box “Upgrade” and click “Next”.
Note: if you had activated the license while installing the previous Virto Cross-Site Lookup version, you do not need to activate it now.