[Gmsh] Meshing 2D without refinement

[Heinz Zorn]

Hello,

i have to convert a mesh in a strange format to a gmsh .msh. I already 
managed to extract all the elements of the original mesh and to write 
only the outer-surface Points, Splines and Surfaces to a .geo-file. The 
meshing works fine but the 2D-meshing refines my already existing 
triangle surfaces. So the element size of the converted mesh is smaller 
then the original. I hope you understand the problem, otherwise please 
ask me for further information.

Is there any possibility to
-either combine the for little triangles of the 2D-meshed surface back one
-or do a 2D-meshing without refinement of the existing surfaces.

Best regards and thanks for your answers!