Hello,
I have searched on the internet for the information about the migration from WebTrends to Piwik, but cannot find the answers to the following questions:
Are there any tools available that make migration from WebTrends to Piwik easy (like Google2Piwik script)?
Are there many functionalities that WebTrends has and Piwik does not?
Regarding Google2Piwik tool: unfortunately it is currently not supported anymore. We are planning to officially stop supporting the tool and then create a new much improved Google Analytics data importer.
I created following tickets to make this plan happen sometimes over next few months: