Connector update fails following a rename

If a connector satisfies the following:

• Implements modify anchor;
• Implements update;
• Uses the connector key to look up the repository entity on update;

The update will fail as the new key won't match the repository entity.

See if the matching entities can be modified so that they have the updated key. This was an issue for v4.1, but may not be an issue with v5.0 as the connector doesn't need to look up the entities.