Currently, if you have an existing dashboard that was not created in a Space, you cannot move it to a space and if you duplicate it, the duplicate is not connected to a Space. If you duplicate a dashboard that is in a Space, it creates it in the same Space. Ideally, when duplicating a dashboard, you would have the option to select a Space to attach it to. This would reduce the need to recreate dashboards multiple times if there is a templated format that your organization would like to use.