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 the Organization Overview page, select a project you want to copy.
From the Projects dropdown menu, click Copy Project to....
From the dialog that appears, select an available organization.
A copy of the project will be saved to the selected organization.