NURBS convert to MESH and reverse operation I encoutered the same problem asked by @Travis here, and I applied the solution proposed by @Moog.
I tried thus to convert NURBS Sphere to MESH and delete Vertex, but when I tried to perform the reverse operation, I loose the object (see below).

Is there a solution for this ?
Thanks a lot in advance for your answer.
You cannot convert a surface to a curve without losing data AFAIK. I think you meant to convert to mesh.