Curve polyline to change shape

i want black curve to turn to red

So far i achieved this (7.1 KB)

Don’t really understand what you’re trying to achieve. If you want the black curve to become the red curve…why not just use the red curve?

I need to deform the black curve shape to red one kind of shape changing

Rhino_k8wGXn8S8y (11.2 KB)

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