Multiple Google Analytics trackers with Tag Manager - Aukera
Here is a good reference from Aukera's blog on how to tackle this topic:
We’re going to look at how to perform multiple tracking in #Google #Analytics: in other words, how to send information to various Google Analytics properties from the same Google Tag Manager tag.
For a start, there’s the technical complexity of executing such an operation, and on top of that, we’d like to clarify once and for all what steps need to be taken in order to perform picture-perfect double tracking on a website (and without making that Google Tag Assistant alert appear, among other things)...
Read full article at http://aukera.co.uk/blog/multiple-google-analytics-trackers-with-tag-manager/.