Task re-assignment history lost

When task is reassigned, I notice there is no task record added to act_hi_taskinst table. So I cannot track the task assignment history. When task is created/complete/terminated, they are recorded in act_hi_taskinst table though.

I use Camunda REST API (/task/{taskId}/assignee) to do the task assignment. And the history level for the process engine is set to FULL.

Did I miss anything?

I’ve figured it out. It is actually stored in act_hi_identitylink table.