I have a copy of Blyton Park that was kindly supplied by @philrob i have tried to convert it using 3dsimed but do not seem to be able to load it back to RF2 can somebody help please - we are going to test this track for real and any practice will help the track is here - https://www.mediafire.com/file/gc9r5ua5tzss0si/BPDC_rf1.rar/file
It is difficult to give you a quick answer, but here are some tips that may help you. Create the folder structure in development mode with the addresses that appear in the original SCN file. Copy the scn file and associates to the new folder. Charging the scene in 3dsimed and export the objects and textures to the corresponding folders. Edit the new SCN file and remove the references to the skybox and the mas files. Try charging it in rF and see what happens.
This can be loaded in DevMode: Download Before you extract the zip File into the Folder ..\rFactor 2\ModDev\Locations remove everything from that Folder, that you have in it from this Track! Keep the old Files as a Backup if you want. And this Version is only made to get it loading! Now the real Work begins