PO Cancellation approval to follow the original PO amount

PO Cancellation approval to follow the original PO amount

the po approval for po amount for example 1000000 routed to approval X, and PO approval for po amount for example 30000000 routed to approval Y, i need in case cancellation for each cases to be routed the same approval of po creation or change order the challenge is when PO cancellation request is submitted, the system treat it as po amount is zero as a change order with change percent = -100 so i can't depend on the original amount Kindly need your support. I used the below attributes with same behavior 1- Entity Change Type as Cancelled 2-