How to restart SAL if Change rejected and user send back to CAB phase again.

I am using SLA in Change Management in Service Manager 9.64. My SLA initial state is pending status and final state is in Progress. Once the change logged its in logging phase then user moves the Change to CAB phase then SLA started for CAB phase. If Change rejected in CAB phase then change move back to logging phase the SLA status is rejected and change move back to logging phase from CAB phase. Now the SLA should remove and SLA should start again when user send the change again in CAB phase.
In my case its not starting the SAL again if change rejected and move back to logging phase and user sent back to CAB again its taking same existing SLA and starting from same time.