Tis a good question. I've had random runins with weld groups b4, it might be how the build is internally chunked in the underlying jpg simplification the engine uses. But generally the closer the movement part is to the point of collision the more likely they are to stay in the same weld group. Previously it was just weather they were separated by another movement part but I'm guessing the change probably came as an optimization or with the shift to the new engine.
Try removing and replacing the hinges or some of the other parts. Sometimes trailmakers just does weird stuff.
I came back to the build after a few hours and it works now
Tis a good question. I've had random runins with weld groups b4, it might be how the build is internally chunked in the underlying jpg simplification the engine uses. But generally the closer the movement part is to the point of collision the more likely they are to stay in the same weld group. Previously it was just weather they were separated by another movement part but I'm guessing the change probably came as an optimization or with the shift to the new engine.
This seems a little complex for me lol but thank you