Further to this issue ... A change can also be edited after it has been CAB/CM approved.
Fault was submitted for ...
After a Change has passed the Planning Phase, approved by CAB (or CM), Implementation task created and a delegated implementation task created, a change can still be edited and a ‘Template’ applied, or planning tasks updated.
This came back as working as designed. Since the whole point of change is a transparent, auditable and secure change process I find it hard to accept the many points during the process at which a change can be edited without the various partys aware, or voting triggered again.
After submittion only Change Managers should be able to edit the ticket. Other participants can add but not Edit.