The active merchandising tags are not used for web analytics reporting. They collect data that is used by your storefront for product placement and sorting search results.
Instrumenting Pages
You must instrument the ISML templates to enable analytics data collection. To instrument the pages, you add tags in specific places within your ISML templates to collect the data. Not all sites require all the data that can be collected, so omit any steps that are unnecessary for your site. Choose the pages to instrument carefully, because over-instrumenting pages can cause performance problems
For examples of already instrumented pages, in the latest version of Studio, select File > New > SiteGenesis Storefront Cartridges. This cartridge download includes SiteGenesis, which contains examples of already tagged pages.
To instrument your ISML templates: