Deleting Imported Autocad File From Revit 2017

[Mishefski]

I see that this topic has been covered years ago but none of the posted solutions seems to apply to my case.  Working in Revit 2017 - imported (not linked.....and I know better now) an AutoCad file to use as my 2D base drawing.  I can see the CAD drawing in all views but cannot click, open or activate it at all.  I have tried Purge Unused, Manage Links and Window Select and none of those work in may case......the CAD file does not appear in any lists or directories when I try those.  I did open Dynamo and got wildly confused w that so I backed out of it.  Any advice to delete the CAD file would be greatly appreciated.  Thank you in advance.

[constantin.stroescu]

I'd try to use Dynamo....as in this example...you'll have to look for Dynamo Packages appropriate to Revit 2017

https://forums.autodesk.com/t5/revit-architecture-forum/delete-imported-categories-dwg/td-p/10069291

[Tommy_S]

Have you checked these 2 buttons? Uncheck them and try to select the CAD underlay again.