I am trying to upgrade to Target Premium on a site that has Target Classic already installed. What I have read in the upgrade documentation is that both the new Target with Global Mbox, and target Classic regional mboxes can co exist on the page. I have set up Target Premium using DTM (by the way I have done this on sites without Classic quite easily) for the Web property using automated mbox update, however when I check my pages the new global mbox has not appeared and in one particular journey the regional mboxes have disappeared also.
So I wanted to check
a) Am I right in saying that Global Mboxs (target premium) and Regional Mboxs (target classic) can co-exist?
b) Can I fire mbox.js through DTM, even though there is a reference to mbox.js in the page from the Classic implementation?
c) Any ideas what might have caused the Target premium implementation not to work?