Changing a Project 
You can use the change project option to switch from one project to the other.
Prerequisites
You should have access to the project.
For more information, see Setting Access Control for Business Rules Project
Procedure
In the Editor Window, choose Change Project.
In the dialog box that appears, choose Ok.
The project table opens in the Rules Manager view.
Select the project and choose Open Project.
The project summary opens in the editor window.