Problem with GN Tracks Buffer.

Okay I am having a frustrating problem with the Great Northern tracks. When I terminate a length of track the buffer does not appear. I have removed all traces of the old file including the routes using that track rule. Cleared the cache, reloaded the file and still have this problem.
Now maybe I am mistaken but I swear that when using GN tracks earlier they did place a buffer on the end of the track automatically.
Any ideas anyone?
Now maybe I am mistaken but I swear that when using GN tracks earlier they did place a buffer on the end of the track automatically.
Any ideas anyone?