Matching Rules in AP not working in Peoplesoft 9.2 PUM 27

HI

I've identified the match rules that I believe are responsible for most of the false positives:

250 Line amount not = PO line amt with PO amt tol

260 Line amount not = PO line amt with PO % tol

270 Line amount not = recv line amt with PO amt tol

280 Line amount not = recv line amt with PO % tol

300 Line amount not = PO line amt with rule % t

These will trigger in cases where we're paying for a quantity less than 100% of the line, regardless of whether the amount and quantity are correct based on what we've received. So for example, if we order 50, receive 30, and pay for 30,