Steve,
I'm going to take a guess at what Pro/e is doing.
Creating a new part or assembly is nothing more than doing a behind the scenes save-a-copy of some pre-existing template (unless blank is used). Whenever save-a-copy (or replace-by-copy) is done (in Pro/e, not from the Workspace), Pro/e checks to see if there is a drawing with the same name as the model. If there is, then it will automatically make a copy of the drawing at the same time it copies the model. Now the model only gets copied in session, but the drawing get immediately copied to disk. (If it didn't, you would have to remember to find the drawing that was just duplicated in session, open it from session, and then save it, or when you closed Pro/e you would lose it.) As soon as the drawing shows up on disk (in the workspace), the PDM system recognizes that this drawing needs a model. Since the model for this drawing doesn't exist in the workspace (only is session right now) it creates a ghost object for it in the workspace. Later, when you've finished making changes to the newly created model and you go to save it, the message pops up telling you there is already an object in your workspace with this same name (even though it's a ghost object) and you are about to overwrite it. Overwriting it does just, overwrite it, and that shouldn't cause any issues.
I have no idea if there is a setting or config option to suppress the overwrite warning when the object about to be overwritten is a ghost object.
Tom U.
