Flowable alter flow does not trigger task listener

hi all,

I am having issues trying to perform an alter flow, where i intend to move the current active user task from user task A to user task B within the same process instance. I used the following code to achieve this:

	ActivityMigrationMapping mapping = ActivityMigrationMapping.createMappingFor(taskDefinitionId,
			ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()


I added task listeners (create event) to both user tasks, but it seems that the task listeners were not fired after migration. does anyone know whether i’m doing it correctly?