I asked BM earlier in the week to clarify because on Monday I found about 4 or 5 signs, leading to an absurd legal situations: if you follow the law, some parts were legally 50 km/h in one direction and 30 km/h in the other.

Maybe it changed later during the week.  Can you please confirm that you checked the entire part between G. Jacques and Gray in both directions?  If the legal situation is clean, we can update once and for all.