Calling RegisterCreatedObjectUndo on an Asset is buggy

I am attempting to enable "undoing" the creation of a new custom .asset file. I have done the following:

 MyScriptable obj = ScriptableObject.CreateInstance<MyScriptable>();
 // <--- Initialization code here --->
 Undo.RegisterCreatedObjectUndo(obj, "New Custom Asset");

When I attempt to undo the registered action, the asset's icon in the Project view goes away but the name remains. Further, in checking the finder, both the .asset file and .meta file are visible. Is it actually possible to "uncreate" an asset as one would expect?

I am running Unity 4.3.4.