This requires quite a bit of work, as you should back up the old file, and may need to change a system setting to display hidden files.
It involves downloading the old shortcut file and replacing the new one with the old. The German blog Deskmodder has a post up that explains how to add the Control Panel link to the Win-X manually. You may use the editor to remove links you don't need, or add links to tools or programs that you use frequently.
You may add the Control Panel link to any group in the following way: The program has not been updated in a while, and it still displays the Control Panel link in Group 2 on launch even though it is no longer displayed in the Win-X menu. You may use it to remove links that you don't need, and add links to programs or system tools that you may need.