Currently if you use at.js 2.0, the tracking server for a4t (analytics for target) is automatically set by the ECID Extension. But if you use a first party proxy configuration where your trackingserver is not your CNAME but your first party domain, the data is not flowing into adobe analytics. So it would great to set the tracking server in the Adobe Target v2 Extension UI, in case you use a proxy configuration on your analytics and ECID. In that case the trackingserver for a4t should be the CNAME and not the firstparty proxy domain, because even with a redirect on the firstparty domain, data will not flow into analytics.
