Vein orientation error

SebastianMunozR

Hello,  I am being unable to process a vein because it doesnt let me flip orientation even though the hangingwall and footwall lines are correct. 

So I have 1 line of hangingwall as a gis object (on surface) and one for the footwall, but when I try to create a new vein in surface chronology it dips to the oposit direction, showing the plane of surface orientation (with the F and H) facing the other way, as if hangingwall and footwall lines were added wrong. 
In the picture it shows 2 veins dipping the correct way, and the surface orientation of the new vein in the oposite direction. When I try to add the footwall as the hanging wall and vice versa to fix it, it just dip to the same direction as before.
any sugestions?

thanks in advance