About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.
When i create a ROAD and then try to delete it by selecting the ROAD AT3 object and clicking DELETE, there is a light grey image of the ROAD object that remains on the drawing that cannot be selected. How is this graphic element selected and then deleted?
Sounds like you may have a trace reference of the same story you're on. Try rebuilding the reference and see if it disappears.
You'll need to do that via your Trace & Reference palette. Or you could do a Rebuild & Regenerate (Ctrl+Alt+Shift+R). Or the equivalent keyboard shortcut for a Mac - either way, it's a real finger snapper.
The trace reference is one of the first things I checked before posting the issue > it isn't the trac; the lines are grey and my trace ref is light blue and rebuilding trace does nothing.