SubD Edge Editing

I am trying to model a landscape for a project. I am using SubD so the model remains editable. The model on the left is a concept. The plan on the right is the desired design. The curved pathway changes. Is it possible for the subd edge that defines the path edge be altered to match the curve in the plan?
Rhino Terrain.3dm (158.0 KB)

Hi Marcus - are you asking about the discrepancy in these shapes?


Rhino Terrain_Maybe.3dm (79.4 KB)


Yes well, I wish to change the model path curve to the new curve in the plan.

you can grab that edge and use align, with the tocurve option.

you may need to do some manual editing to get it closer, but that will get you heading in the right direction.