Dear babus: The discrepancy is easily explained, in that the son referred to is by Emily, in 1907 or so. In late versions of the script, he gets mixed up in radical politics and is supposed to be killed taking part in a Fascist riot in Rome during the 1930's. Hence, his body is returned to Xanadu for burial. In the finished picture, all of that was trimmed, and according to the narrator, the son is explained away (along with Emily) by death in a car accident. [Just reminded me of Paola Mori Welles' real life death in a car accident.]
Colwood: You may be right, of course, about the scene never being shot, but I rather think the residue of this funereal scene is to be found in the Newsreel, where Kane in formal overcoat and Homburg hat is seen trying to cement some kind of capstone, and becoming annoyed when he sloshes wet cement upon himself. If the scene was shot, it would have been at that point.
Orson & Jazz: The funeral scene is insightful, as to the state of the old man's mind shortly prior to his death. I think it is a beautiful scene in itself, but really, one crucial detail which an artist must determine is this one: "When is my work finished?" The scene would have required a whole other subplot to set up. CITIZEN KANE, as it stands, unlike many of the butchered or uncomplete Welles' films, is perfect. It is done. Nothing really needs to be added nor subtracted. That is why it is often deemed, "The Greatest American Sound Film Ever Made."