Did FS9.1 remove the old default bridges (at CYVR it did)?

I inserted five new default bridges across the Fraser River channels in my Vancouver International Airport scenery (CYVR4.1.zip) with Ground 2k and since applying the FS9.1 patch, these have disappeared! (Or I also just installed Windows XP SP2 but I doubt that would be the offender).When I try a default scenery.cfg file the four default bridges (I had excluded these for my CYVR4.1) are not there either! It seems as though the new bridge function in FS9.1 might have removed the old default bridges