If I update my web tracked custom domains do I need to update the web page

When adding a new qualified domain through the Settings > Org Settings > Web Tracking settings, the new domain is then automatically added to the Web Tracking code. This does not necessarily mean that the web tracking code in your HTML is updated. The meta tag in your HTML needs to be manually updated so the changes take effect.

Consider the following example, if the new qualified domain is set to bbc.co.uk then the meta tag update would be updated to <meta name='com.silverpop.brandeddomains' content=www.pages04.net,bbc.co.uk />.