Contours looks wrong in OpenRoads Designer vs. old InRoads

Hi

We have faced some issues with contours in OpenRoads Designer. We do not think it has something to do with how the surface is created because we have both tried to import a surface as LandXML and also created it by points directly in OpenRoads Designer.

In OpenRoads Designer it looks like this with many wrongly connected contours:

In InRoads the exact same area looks like this (which is just what I've expected):

Can anyone tell me if I have to change some parameters or what else to do, to make correct contours in OpenRoads Designer.

Thanks in advance.

Regards

Rune H. Christensen, LIFA