Connection inside of a spline. SC can't follow.

[Trainzland]

It seems if you have a connection inside of a spline then the SC can't follow against the spline direction. (red arrow)
The blue line represent the possible moving direction of the SplineController.




The only way to build a working connection is to use Split on Spline 3 at the red arrow.
But Split deletes the last ControlPoint of Spline3 unfortunately.



So I recommended to have a Split function that doesn't delete the ControlPoint of the un-parted spline.
It's a lot of word to recombine the un-parted spline and fix the connection because the Connection position is always lost too.

But anyway if these 3 single splines are connected, the connection itself on snyc dir/len/rot gets corrupted unfortunately.
The reason is snyc length. If its activated it seems the function doesn't take care about math.sign of the handles.