save.open not working the same as copy/paste

[Randall Twede]

in my Paint program if you open an image file, draw something on top, then save, the part you drew gets saved also. but when i copy and paste the same image with the same thing drawn on it only the original image gets pasted. not the stuff drawn on it. i don't get it.

		else if(e.getSource() == openMenuItem)
		{
			canvas.clear();
			fader.resetSlider();
			image = io.open();
			canvas.repaint();
		}
		else if(e.getSource() == saveAsMenuItem)
		{
			io.save(image);      
		}
		else if(e.getSource() == copyMenuItem)
		{
			if(image != null)
			{
				ClipboardHelper.setClipboard(image);
			}
		}
		else if(e.getSource() == pasteMenuItem)
		{
			Image temp = ClipboardHelper.getClipboard();
			if( temp != null)
			{
				image = (BufferedImage)temp;
				repaint();
			}
		}

[Tony Docherty]

Have you opened the saved image in a different graphics program to ensure the edits are really being saved.