Outside Ops Purchase Order P3161

Hi,

I'm working with environment 9.1.

My understanding is whenever you want to cancel an outside operations purchase order, you must do so via P3161. Exit from the WO Routing to Outside Operations. This then breaks the link between the routing and purchase order.

Our purchase orders for outside operations go through an approval routing process.

When I cancel the purchase order via P3161, the status updates to 980/999, however, seconds later advances to next status 280 and/or 230 based on the value of the purchase order.

Why once status has advanced to 980/999 would it then route through approvals?

Thanks

Teri