Hi again, I'm still working on this project. It was my final exam project, I passed it with highest mark, but I still, there is a lot of to do to finish it. Is it possible to joing two different curves, without loosing ones parameters ? first curve has lot of work put in, hundreds of position points made for vehicle, and second curve is just created, clear one. I want to join them, without loosing firs parameters. Is it possible ?