Editing passwords

Have a password.  Go to site and change my password.  Then want to edit the existing password Norton Password is holding, and it won't allow me to change it saying the name already exists.  This is causing me to have a ever-growing paper password list because Norton Password is getting more and more out of date.  Very soon, there will be NO POINT in have Norton password manager. Oh and I can't upload my sample because it is a JPEG