How to delete a connection 

Use

You can delete Connection Occurrences in models. Use tab page Relationships to delete connection definitions.

Procedure

Delete Connection Occurrences in Model

...

       1.      Select the connection.

       2.      Press the Del key.

Delete Connection Definition

...

       1.      Select an object.

       2.      In theRelationships tab page, activate Characteristic Window.

       3.      Click on the row containing the connection.

       4.      Click on the Delete button.

Result

The connection is deleted in the model.

The connection definition (tab page) is deleted if it does not occur in any model.