Cover the Curve Bezier with a Plane. It's impossible to duplicate it and R it I did a Curve Bezier and I wrap with a Plane to make a ribbon.
When I try to copy it and rotate the ribbon(plane) is undone.

After the Curve Bezier. I did: Modifier / curve / object. Curve Bezier

In this tutorial https://www.youtube.com/watch?v=VTVgyjh4Yro  7:25
it's possible to copy the ribbon.

Thanks a lot.
To Duplicate it you should have both objects selected the Plane and the  Curve, but in order to make it successfully the active object when you dublicate should be the Curve.

Your problem is that you selected only the plane when duplicating