Promise Date Tolerance is not working if the correction Promise date is with in the current date

Hi All,

I have requirement from the business.

If they Buyer change the Promise date system should take the approval process again.

here is the system behavior.

Initial Po submitted  for approval with need by date as 27/Aug/16 and Promise date as 1/Sep/16.

Later we changed the need by date to early date i.e; 31/Aug/16. Save the record. PO revision got created. and PO status got changed to Requires Reapproval.

After submit for approval system auto approved the PO.

I have set the Change order date tolerance also

Auto-Approval Tolerances for Orders

Promised Date Maximum Increment to 1

Auto-Approval Tolerances for Releases