I think I may be the persistent user! I've not given up hope........✈️

If what someone else posted is true, the developers are long gone, so the chances of this being fixed are slim to none. Sad, because UT is the only AI addon that has AI traffic flying real airline routes with sid/stars. Everyone else flies GPS direct.

UT2 does not fly SIDS or STARS. It can't because the flightplan uses the airport as the departure/arrival not the specific runway. You can however get creative with your own flightplans and use the SID exit or STAR entry as one of the waypoints. However FSX will more than likely give you vectors to land long before the AI reach the STAR.

Seem to be some life back to this with the recent update to the 2016 schedules released over at Flight1.  I'm flying over the Gulf of Mexico and an AeroMexico 738 just crossed below me at FL350.