Autodesk Vehicle Tracking can read vehicle library files back as far as AutoTrack 2, as well as WinTrack 2.x library files. It can also read AutoCAD drawings that contain data generated by earlier versions of AutoTrack and the vehicles contained therein. However, it cannot report upon or manipulate path data generated by these very early versions of either product.
Vehicle Tracking can be used alongside AutoTrack v2.x but not AutoTrack v3.x.
If you want to load v2.x libraries you will need the vehicle files and the corresponding library definition file (extension .DEF). If you do not have this file, then create a text file in the following format:
{LIBRARY NAME}
{VEHICLE FILE NAME}
{VEHICLE FILE NAME}
{VEHICLE FILE NAME}
etc….
Where {VEHICLE FILE NAME} is the AutoCAD drawing file name (without the extension). So if you want to load an old library called "Any Old Library" consisting of three vehicle files, CAR.DWG, BUS.DWG and TRUCK.DWG then your DEF file should look like this:
Any Old Library CAR BUS TRUCK