Grid BF47 , is this a bug or does traffic in fact pass through this area?

[Paul Riley]

28th Nov 1939

I have just been given orders for my 2nd patrol of career 2 to patrol BF47.Now looking at my map and the slideout map in GWX3 there doesnt seem to be any lanes in this area,the nearest being along the northern section of BF,and the NE section of BE.
My instincts are telling me BDU are trying to find shipping coming out of Gibraltar?,but even that is quite a way away from my current patrol.I could always head west until I reach the HG lane (is it operational at this point of the war?).If all this fails I will probably lurk around some of the western french ports and see what I can find there.
I dont really want any spoilers here,just a confirmation that traffic is known to pass through this area.I will also probably spend about a week patrolling the northern part of BF.

Thanks for any info you may provide here