AP Draft Processing impact on AP inquiry and reporting

Hi,

The AP draft P1 document type appears in the Supplier Ledger with a negative amount in the gross amount field and 0 in the open amount field.  Is the draft document supposed to appear in the Supplier Ledger with a negative amount?  I had read document 661776.1 and was under the impression that the P1 "replaced" the voucher documents that are then updated to P and open amounts set to 0.  This led me to believe that the P1 would appear in the Supplier Ledger with a positive dollar amount.  As is, it in effect, appears as a payment in the Supplier Ledger while the other payment document types do not appear there.