PO Approval Workflow - Does PeopleSoft have the ability to generate workflow when cancelling a PO?

We track very closely a buyer's limit to add dollars or decrease dollars when modifying a PO. Each buyer has a dollar threshold limit and if the PO total goes above their approved dollar limit, then the PO is sent thru workflow to be approved by the next person (in most cases, their manager). When cancelling JUST a PO LINE, the approval process is kicked off and we get our expected results. However, when we cancel the whole PO, it will NOT invoke the approval process.  My question - Is PeopleSoft designed to be able to submit to Approval workflow a PO that has been canceled?  FYI - We are on Version 9.2 PeopleTools 8.54