With the confine setup properly you should never have to use the editor.Thanks, I'll take a look and see if I can make the track boundaries more robust. All the service roads outside the track should already be invalid, but I guess there are gaps. I know what you mean about using the editor to fix it, tried that and lost patience very quickly.
Presumably the workflow for this is: export kn5 > record AI > load AI into editor > fix model > repeat?
For the confine object method Export to aiwall.kn5 > add to models.ini > record AI > remove entry from models.ini > done