I have inherited a model of a conveyor chain with configurations using a Curve Driven Pattern and it is not working as needed. There is a table driven layout sketch that drives the length of the chain. Then a fit-spline follows the sketch and the curve driven pattern follows the spline. Unfortunately the spline does not stay with the sketch. I have attempted to have bypass the spline and use just the sketch but am only able to select a segment of the sketch at a time rather than the whole sketch.

The questions would be 1. is there a way to make the fit spline follow the sketch as it changes? or better yet 2. is there a way to be able to simply use the sketch and bypass the spline all together?

Thank you