I've been playing around with song mode, and noticed that if I delete a Section in the middle of an arrangement, it will get removed from the timeline (on the left screen) and the other sections slide back to fill in the gap. But on the right screen, the pads don't re-align, so there is a blank pad where that section was, and if I hit the pad, the section gap appears in the middle of my arrangement. Is this intentional? It seems unexpected.