These are actually several questions:
1. The IT team of my client has no resources right now to take the Webtrends base tag (script version 10.4) out of their HTML templates (it is quite risky, too). The client nevertheless wants to start using Tealium to enhance the current tracking, e.g. we want to add parameters to the Webtrends tag via Tealium (as if we were adding additional Webtrends Meta Tags or Webtrends JavaScript variables to the head).
a) Is this only possible if the utag.sync.js file is included as well (and above the existing Webtrends tag in the head of the page)?
b) Could I for example set additional parameters via a synchronously loading JS Extension that the Webtrends Base tag uses then?
c) Is it possible at all to include synchronously loading JS via Tealium? I can't find a "sync" Scope in JS Extensions.
d) Is it mandatory to include the utag.sync.js at the start of the body tag? So far, I had always thought it has to go into the head? Could it go into the head above the existing Webtrends head tag for example?
2. I also read that it is not possible to test utag.sync.js via switching to another environment via Web Companion. What is the best practise to to test utag.sync.js deployments then?
3. I need to add a Webtrends tag to a website to enable us to do some additional Event Tracking. When I do this though, the Webtrends tag by Tealium gets overridden by the Webtrends tag that is already on the page (in the HTML template, not included via Tealium). I can see that when I block the existing tag, i.e. /js/webtrends.load.js, via Fiddler, my Tealium tag fires.
I would probably need to set the main Object of Webtrends to a different name to avoid that. But I don't see such an option in the WT tag configuration settings in Tealium.
Thanks for any help!