Last night in the LW Orange ME163s started showing up a dime a dozen around A19. It is my understanding, though I did not personally confirm, that they were all coming out of A20.
I don't recall the name of the map, but it is the one with the water in the middle and all the bases around the edges. Anyway, I don't think A20 is supposed to be the enabled 163 base. Could you verify and correct if necessary.
Thanks