Mesh trimmed surface

Hello !

I have some difficulties meshing a trimmed surface in Grasshopper.

Since I’d like to parametrize the mesh of a complex brep made of joined surfaces (some trimmed and some untrimmed), I need to mesh the surfaces before joining them.

My problem is that when I mesh trimmed surfaces (using the Mesh Surface native component or a Mesh+ component), Grasshopper meshes they entire underlying untrimmed surface.

How could I only mesh the trimmed part ?

Unfortunately I cannot join the file because it is part of a confidential project, but I will try to reproduce the problem on a free file.

Thanks for your answers !

Use Mesh Brep.