A. Event history of a task reassignment is allowed
B. Event history of a change to a custom property on a task is not allowed
C. Event history is automatically logged when a task state has changed, a task is added, a task is deleted, or a task is modified.
D. Task event history can be added, modified, or disabled by changing the Audit Definitions on the Content Engine CmAcmCaseTask object
E. Event history is automatically logged for a task state change from working to completed as part of base ACM product and cannot be disabled or modified.