To import an AutoCAD DXF file into AutoTRAX click the Tools→Import → button.
The objects will be imported on to the current layer and added to a single group. 3D dimensions will be ignored.
DXF import dialog
Color for 'White' lines etc.
Click the button to select the color to use for DXF entities.
Select the scale for importing entities. The larger the number, the larger the entities will be when imported.