Specifying that an io flow is no longer realized by an item
You can specify that an IO Flow no longer realized by an item through a diagram and through the Links Editor.
To specify that an io flow is no longer realized by an item through a diagram:
1. On a diagram, locate the Association, Control Flow, Exception Handler or Object Flow that no longer realizes the IO Flow.
The IO Flow must be shown on the Association, Control Flow, Exception Handler or Object Flow.
2. Right-click the IO Flow, and then click Delete IO Flow Realization.
To specify that an io flow is no longer realized by an item through the links editor:
1. Open the IO Flow's Property pages.
2. Click the Items tab.
3. In the Show Associated list, select Realization.
4. Click the 
Link button.
Link button.5. In the Links Editor, clear the check boxes associated with the items that are no longer realize the IO Flow, and then click OK.