Mesh Brep vs Mesh From Closed Polyline Rhino command

Hi,

I am trying to create a mesh from a polyline using grasshopper. My polyline has some edges in which there are 3 vertices. When I use the rhino command "mesh from closed polyline", I get a mesh which has a vertex in each of the vertices of the polyline. But, when I try to create the mesh using the Mesh Brep component, I get a simplified mesh, where the extra vertices in the edges of the polyline have disappeared. I think it is easier to understand what I am trying to say with the following screenshots:

Polyline:

Mesh created with the rhino command:

Mesh created using grasshopper:

The last mesh has less faces, as the Mesh Brep component gets rid of the extra vertices that define the polyline.

Any suggestions?

Thanks,

Diego