Are you supposed to be able to do both? After I did an event in the Hi story, all the Low icons have vanished from the map.
I did lowcar story and then went back. Try refreshing your map.
If that doesn’t work then maybe contact Forza.
Restarting game didn’t help, but they reappeared after finishing Hi. Maybe can’t work on both at the same time.
Maybe. I finished Low before moving to Hi. That makes sense.