In my case, I have an obsolete documents which cant be use again for same purpose. If I do not re-use it, the empty vacancy remains in my documents e.g, ab-01, ab-02, ab-04 etc... ab-03 is an obsolete. But, I want to handle it by giving another topic. If I give another name to this, then my documentation work will increase further. So, I wanna re-use without more documentation.