Approval amount in the approval hierarchy was not used for approval of new revisions of PO

 Hi,

PO approval amount was not used by approval hierarchy to decide the approver when a new revision was created with change to delivery date to the PO and resubmitted for approval. The buyer has the approval limit of $2 and the manager has the approval limit of $1000. when a po with PO amount $100 was submitted for the first time for approval, system routed it to the manager for approval correctly. However, when the buyer made changes to the PO for data not related to the amount, like promise date, the PO didn't go to the manager for re-approval.