Sorry i didn't read that earlier. There is an easier fix to that "rookie"-bug from the last TTS.
"Go into Users/Documents/The Crew 2/Temp and find and delete all files starting with HighlightCache_.
Your old highlights should return after a few minutes in the game and you should be able to set new highlights without getting reset to Rookie."
btw because things like this i always do a savecopy of my documents-folder before i install and play a TTS.
After that last i just copied back my savegame and it also fixed it for me.