There seems to be a problem on PHX. It seems that anything from north cargo doesn't want to accept a route you give it. But if you just do a general taxi to runway then it will take the one the game whats to take.
https://clips.twitch.tv/ApatheticPunchyFungusFutureMan
https://clips.twitch.tv/AgitatedHeartlessHumanOneHand
The log file was too large to attach. Here are the lines from UPS850 first communication.
03:21:25 * UPS850 => ADD HISTORY: UPS850: Tower, UPS 850 with you Runway 25L.
03:21:36 alt: 6693 takeoff: False/False/-2 OWNER_TOWER r: 25L * SKW5906 => STATE CHANGE from STATE_INCOMING to STATE_INCOMING
03:21:36 alt: 6693 takeoff: False/False/-2 OWNER_TOWER r: 25L * SKW5906 => ***** no free terminal
Store stat: True
03:21:47 alt: 6693 takeoff: False/False/-2 OWNER_TOWER r: 25L * SKW