Select the end of the segment you want to
disconnect.
CATIA finds the end closest to your selection.
Moving the pointer over
the segment end highlights the end and shows the status of the
connection:

- The green circle indicates that the segment and
connector are geometrically connected.
-
indicates that the two are electrically connected.
- An arrow shows
the direction of connection.
The segment and connector are disconnected.

Note: For the case of Geometrical Link, the Branch geometry
is modified to last but one Routing Element (as shown above).
For Distant Link, only the pointing Extremity is selectable for
"Disconnect Segment". And only the distant link is removed (as
shown below).
Before disconnection: |
After disconnection: |

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