In AC 12, I can select a placed external .dwg on a different story (set as trace reference). This happens if I click on a node of the .dwg, like a corner of two lines, or if I drag a selection rectangle over the node.
I end up dragging the external drawing to the wrong place. I put the drawing on a locked layer to keep it in place. Is this a "feature" I haven't figured out how to disable, or a bug?