Hi,
This says user-service2 tier never received /2 request , but it says uri is /user-service only
http://community.appdynamics.com/appdynamics/attachments/appdynamics/appdynamics-discussions/6666/8/3uservice-v2.jpg
This screenshot says that only /v1 calls are made and are resolved, my question /v2 is not called as per screenshots
http://community.appdynamics.com/appdynamics/attachments/appdynamics/appdynamics-discussions/6666/7/3uservice-v1.jpg
Now comming to your initial question "applicaiton xyz is hitting only http://a.com/abc-service/v2 but
appdynamics reporting call is going to both tiers abc-service and abc-service-v2 . why?"
/v2 is not shown resolved backend URLs and is evident from above screenshot links, please provide screen showing /v2 as i do not see any
Now comming to agents tab, you are in tier level,, agents tab will be in node dashboard, nodes tabe and double click one node and then you will see agents tab