I'm wondering if once the current 4DTV datastream is gone if our units could just get hit without a MR for the 4160 EMM? If that is possible we could keep all our current mapping generics etc and sub to HITS. I think this may be possible once there is no 2 data streams conflicting. I did get the AI map in the summer and my 4096 (4D) EMM showed my subs on W5 and AI. In theory it should be the same the other way around. Testing will be needed once 1/4 hits and see what happens.