I will make an attempt to help. Tracks of different types should work as long as the track gauge is the same. From my experience with TRS2006, I have found that derailments at interactive industries is caused by an open joint, a difference in track elevation or misalignment. It is usually not visible unless you zoom in on the offending joint with surveyor. Deleting and relaying the track between the last yellow circle and the fixed in place industry track and saving the change should solve the derailment problem.
Good Luck, tomurban