PO Through The Approval Hierarchy When Re-approving With a Lower Document Total

Dear,

It is standard functionality that when re-approving a PO whose Document Total is less than originally approved that the PO does not pass through the Approval Hierarchy.

To achieve the functionality where PO's whose Document Total has decreased after being approved would then pass through the Approval Hierarchy upon re-approval, the WF attribute mentioned should be set to a negative value.(Doc ID 728789.1)

I have executed the below statement in our test instance but system is not sending for re-approval, Any thing else need to be done in order to send for re-approval.

update WF_ITEM_ATTRIBUTES
set NUMBER_DEFAULT = -100