At the moment if a user makes changes to an existing workspace it is not possible to just save those changes. The user has to save a new workspace and give it the same name to overwrite the current workspace. This is counter intuitive and also more steps are needed than necessary. Maybe to some users it is even discouraging because you get a prompt to overwrite your existing setting.
Please consider adding this functionality and a simple menu command to facilitate saving an altered workspace with just a click. Please see attached screen mock-up