Unable to override vegetation over biomes

Just a quick one, and very specific It seems like that, when a biome polygon
override Is applied in a scenery, It Is not possibile to remove vegetation (by
density or by scale) with another scenery on top of them. Maybe It Is
intended, but some developers could skip (forget?) the debug shapes menu and
never get to solution This behaviour as been observed while trying to remove
some trees in the St.barth (tffj) Asobo default addon, It Is literally filled
with polygon-vegetation-biomes (and by the way, there Is something wrong with
them, shouldn’t they be the tropical type?) Some further info in this 3d