Hi,
There is a stored procedure in SMP 7.1 SP1 called tmcleanupTaskOrphans, but it does not help. If fact, what we found is that there is a hidden policy creating those tasks. So it seems every managed delivery policy is creating a new instance of this task.
This is also creating problems with the TaskInstances table and cleanup and summary tasks not working properly
Our current workaround is to delete the tasks with some scripting. Keep in mind your Task server might be affected too, the history folder is getting full of files and when you click on "Task History" the interface takes a long time to load
How many SW policies do you manage? How many endpoints?
Regards
Santiago