Hey.
I've been having a play around. It seems the issue comes when setting 4D track to another type of track. Previously this would keep the assigned rotation values for the cars on each bit of track but in later versions it seems to no longer do this.
In the attached image the ride on the left which has had its track set to Twister Coaster is not rotating like the ride on the right. Both loops of track are identical with a slow rotation set along the straight the car is on, changing 45 degrees for each track piece the train crosses.
This image was taken in version 0.2.5 (2020-03-24) and when loading the saved game (which i have also attached) the ride on the left has reset all the 4D position settings to -180degrees
I also have version 0.1.2 available and if I open the exact same save file then the 4D positions settings are set correctly and the ride on the left rotates in the same way as the ride on the right.
Hope thats a bit clearer.
Thanks
Dave
4D_Test.sv6