Copying a project from one edition to another does not preserve the contact

It looks like the client contacts are not copied when a project is copied from one edition to another. I believe client contacts are set as client rolify roles (User.with_role(:client, project) / user.add_role :client, project) on the original, and should be explicitly copied by also adding these roles on the new project.

The relevant controller is the admin/course_editions/project_imports_controller.