# Different versions - different meshing?

Hello,

Is it possible, that the meshing changed throughout the versions of NGSolve? With the code below, I got a mesh with 12543 nodes in NGSolve-6.2.2101 and with 12457 nodes in the in NGSolve-6.2.2103. That’s a problem, because I saved some GridFunctions with the old version, that I want to process with the latest version. Is there a fix? Can I somehow create both meshes in one version?

BR, Nepomuk

```Lbeam = SplineGeometry() rad=0.25 offset=0.1 mh=0.025 pnts = [(0, 0), (2.5, 0), (2.5, 1), (1+rad+offset,1),(1+rad+offset,1-rad+offset),(1+offset,1-rad+offset),(1-rad+offset,1-rad+offset),(1-rad+offset,1+offset),(1-rad+offset,1+rad+offset),(1,1+rad+offset),(1,2.5),(0,2.5),(1,1)] pind = [ Lbeam.AppendPoint(*pnt) for pnt in pnts ] Lbeam.Append(['line',pind[0],pind[1]],leftdomain=1,rightdomain=0,bc="bottom") Lbeam.Append(['line',pind[1],pind[2]],leftdomain=1,rightdomain=0,bc="force") Lbeam.Append(['line',pind[2],pind[3]],leftdomain=1,rightdomain=0,bc="nix") Lbeam.Append(['spline3',pind[3],pind[4],pind[5]],leftdomain=1,rightdomain=2,bc="nix") Lbeam.Append(['spline3',pind[5],pind[6],pind[7]],leftdomain=1,rightdomain=2,bc="nix") Lbeam.Append(['spline3',pind[7],pind[8],pind[9]],leftdomain=1,rightdomain=2,bc="nix") Lbeam.Append(['line',pind[9],pind[10]],leftdomain=1,rightdomain=0,bc="nix") Lbeam.Append(['line',pind[10],pind[11]],leftdomain=1,rightdomain=0,bc="diri") Lbeam.Append(['line',pind[11],pind[0]],leftdomain=1,rightdomain=0,bc="left") Lbeam.Append(['line',pind[3],pind[12]],leftdomain=2,rightdomain=0,bc="nix") Lbeam.Append(['line',pind[12],pind[9]],leftdomain=2,rightdomain=0,bc="nix") Lbeam.SetDomainMaxH(2, mh*0.2)```

Hi, yes we improved quite a bit of stuff in the mesher. You need to save the mesh with the old version along with the gridfunction. The mesh can then be loaded with the new version.
Best Christopher

Ok, thank you.
BR, Nepomuk