[Gmsh] Mesh renumbering to MED format

[Miguel Segade]

Hi

I need to do some operations involving meshes in .bdf and .med format. 
One problem that I faced was that after exporting a .med file to .bdf a 
renumbering was done, but this was solved in this gitlab issue: 
https://gitlab.onelab.info/gmsh/gmsh/-/issues/601.

Now I'm facing the opossite problem, I need to export a .bdf file to 
.med while mantaining the element numbering scheme. But apparentely, 
.med does not allow arbitrary node numbering. Is this correct? If yes, 
is there any way to generate a relation table between the two mesh 
numbering?

For example, elements 80044, 80054 and 80064 in the .bdf correspond to 
1, 2 and 3 in the MED file.

Thanks