This notification is sent when transition occurs from use of one clause to another for selecting an answer on a DNS rule match. For example a transition is said to have occured, when a DNS rule uses a clause identified by cgdSecondClauseId instead of cgdFirstClauseId. -cgdFirstClauseId contains the clause number used for selecting the most recent answer for a DNS rule. -cgdSecondClauseId contains the clause number that was previously used to select an answer for the DNS rule.