I also came to the conclusion that there's a typo in the game, as German airfield 'Brullin-Higny' (WOFF Verdun) is highly probably 'Preutin-Higny'.
And the airfield was exactly here (according to the family of farmers owning the place, the encircled building was used to repair planes)
So, I'm going to relocate the drome and change its name (but not the ID, which should serve for Jasta assignment and target management)
EDIT:
Wait, wait, wait!! Does someone use this entry to add 'Boistrancourt Extension'?? It could very well be me, messing up in Excel.
EDIT2:
My bad