Problem exporting to CAD from Kubla - Broken Lines

Hi there

I am having a problem exporting files to CAD.  Namely that upon export, my CAD file is breaking the contour lines into thousands (literally) of separate and overlapping lines and unjoined points. The data I am importing into Kubla is good, but is only an issue upon export.  Is this something that can be remediated with a setting?  Or am I doing something wrong?

Would appreciate any ideas with this.

Cheers

Tyron