I was playing this map as part of the grand campaign package and only part of my re-inforcements arrived. Attacked with 2x 20 units and only 12 of the reinforcing army actually came to the battle. The Re-inforcement zone happened to be on the back end, by the small deployment zone if that helps at all.

yeah discovered that bug today. Wich is weird because between the slope, the cliff and the no go region I put for the AI they really shouldn't go there. I will update this map soon I think, it's a little too packed right now

There is what seems to be a little tunnel inside the settlement. on the rocky side of the hill inside. The bad guys can and DO just walk right up it to the top of the hill. not go around to the ramp side, as it would seem to be intended. Kind of hard to make a last stand there if they can back door you. Also there are a bunch of places inside the yellow area that are just buggy for placing units.