I heard that, because the developer of this game drove the ATs while playing with different physics, some ATs are now impossible, but I couldn't find out which ones. Does anyone know which are affected?

Thank you, this solved my problem. Creating my own custom campaign with the bonus tracks is sufficient for me.

there are more official maps in the challanges folder aside from the campaign, but I'd like to be able to select them like the other tracks. I know there is a way to do this in TM ESWC where you can make the bonus tracks appear by replacing the Nadeo folder with an altered version, and I wondered if somebody had created a similar one for TM Sunrise.