I often use the schedule,reschedule.
Right click on the reports History
Right click on the Instance Reschedule…
BO4.1 reschedule prompts Logical changed
Last schedule prompts are 201501-201508
The report new prompts are 201501-201509
Use reschedule,schedule prompts are 201501-201509 for look,
But,after you click Apply ,schedule prompts are 201501-201508
The solution is as follows:
in turn click schedule prompts :Prompts modify Apply,
and schedule prompts are 201501-201509
Schedule prompts may change when you want to.
Hope can help you.