You can try the following:

In Eclipse, open the project editor. Go to the Process Configuration tab. Open Project Configuration>Configuration Data>Planning>Plan Views.Select your plan view and press the "Promote" button on the top right. Promote the view.
On the Plan Types node, select the plan you want to add your plan view. Add the plan view and save.

Please note there were limitations on promotion of plan views that were lifted in release 4.0.5. If the promote does not work due to this fact, the solution above does not work.