My ditches/end conditions were working fine, but suddenly disappeared from 7 (out of 30) corridors containing different template drops.
One corridor could be restored by simply processing the corridor, but the other corridor, containing the same template drop, was not restored by this action. The ditches, however, did come back when creating a new corridor, using the excact same template drop. I have also tried changing, reloading and reactivating the terrain without any luck. I therefore suspect the corridor to be the problem, rather than the template drop or terrain.
I have included several screenshots of the problematic corridor, the new corridor created on top of the old one and the used template drop (just in case).
I would really much prefer not having to remodel all my corridors, so is there anyway, I can repair the ones I have and get back my ditches?