Export of Contour Lines

[Stunnline]

Hi all!

i have a problem with the export options for the shapes (in this example contour lines)
I want to export my contour lines in a local coordinate system.(DXF) Unfortunately this setting isn't available, when exporting shapes. I calculated everything in WGS 84.
For Example the export of the Model or Pointcloud works fine to Local Coordinates.
When exporting those in the WGS 84 system, the models can't be represented correct, when opened with other software like CloudCompare.

I need to provide the contour lines for a customer, but the scaling and 3D-view of the contour lines doesn't work in his software, if exported in WGS 84.
Is there any possibility to fix this?

Thank you!

[treeboyy]

Can you reproject with other software? GIS, CAD etc.

[Stunnline]

All i can say is, that the import into a CAD software isn't really possible.
Well it is possible, but it doesn't show anything except the 2D-view of the contour lines.
The DXF should contain 3D-Information, right?