RULE_R900 Match Exceptions

RULE_R900 is generating match exceptions for 2 vouchers.  Here's the scenario:

PO 123 Quantity 2

Receipt 456 Quantity 2

Voucher ABC Quantity 1

Voucher DEF Quantity 1

So I have a 2 vouchers that's trying to match up against 1 receipt but matching is putting them both in exception.  I even tried manually associating the receipt to the vouchers and they still remain in match exceptions.  Is that the correct functionality?  I would think the system would be able to match the vouchers to the receipt if the quantities on the voucher did not exceed the quantity on the receipt.

I should mention that we are on FSM 9.1 with no AP bundles applied.