Not all that long ago, we used to be able to add an old version (2007) of an AutoCAD DWG file to a standard MXD file, then publish a map service with it and view the content on an ArcGIS Online web map, either in the browser or with the mobile devices. This was a very useful tool in quickly getting some unintelligent linework up on an online map for others to view.
That seems to no longer work, though you can still successfully add the DWG to the MXD. It no longer carries through to the published map service. Does anyone else use this or see this issue? What upgrade package would have lost this functionality?