Campaign tracking over reporting
We are using Google URL builder to create trackable URL's using _UTM parameters to record clicks on Graphic banner ads. The problem is that Google Analytics is still recording sessions long after the ads are removed.
We are creating News articles in our cms, and then adding 'non cms links' into the form field. We are also having to shorten the links first using our own internal shortener because the Links are too long. The shortener does not reuse links.
Google support suggest that the URL's are still being followed somehow even when the pages are removed. I doubt 1000's of people are bookmarking our banners.
Re: Campaign tracking over reporting
If someone clicks your ad and then comes back to the site by "direct" channel the traffic is assigned to the last known source.