I didn't see this in any recent discussions. I learned the hard way that using Attack Move on my Engies has a few quirks.
For example, dragging the Order through tree groups will often result in moving through those trees en route to the final target point, thus destroying them. Dragging a long Attack Move through rocks works fine. Additionally, the reclaim range of Attack Move is many times greater than Patrol or manual reclaim, almost ridiculously so.
I'm actually surprised this was never addressed, so is there a technical block on editing this function? If not, then I suggest adding a ring around the target point of Attack Move, showing the reclaim range.