You can directly copy a project that you have open to another organization without having to export and import a project.
A copied project file contains data source definitions, endpoints, parameters, responses, and so on, depending on the type of endpoints or event streams contained in the project.
To copy a project, follow these steps.
From within a project, open the Organization dropdown menu and click Copy Project to....
From the dialog that appears, select a destination organization for the project.
A copy of the project will be saved to the selected organization.