This is related to command LayerOrder or AecLayerOrder in AutoCAD Architecture 2015.
This command lets user specify the order in which layers are displayed in the drawing. I'm trying to modify the order by program, but can't find where this list is stored. It has something to do with a dictionary AECDACH_VARS_UTIL within dictionary AEC_VARS, because when it's deleted, the layers go back to their original order.
Any advice would be greatly appreciated.