Anyone know if using the PDOI Auto Approval Process a notification mail is sent to the supplier?

I have a issue... when I import a PO with Import Standard Purchase Orders Concurrent with Approval Status parameter as APPROVED., The PO is created and after a few minutes the PO is approved, this is OK, but Email notification is not send to supplier.

I find this note Purchase Order Documents Interface (PDOI) Enhancement Features and Considerations (Doc ID 1939713.1) , but sending mail is not mentioned

I made a PO with Import Standard Purchase Orders Concurrent and I made a PO through the standard windows, The PO of the standard windows send the mail successfully; I compared both WF but are totally different