Match Exception - Rule 330

Scenario:

Voucher quantity = 33, copy PO Receipt quantity  = 33

PO quantity  = 40

Receipt quantity = 33

When Matching is run, exception 330 (vchr LTD qty > PO qty w/ receipt tol) is generated.

Review of exception shows Vchr LTD qty = 80, PO qty = 40, no receipt info displayed.

PO has multiple lines but the PO line noted for Vchr above has never been billed before so the LTD vchr qty should = 33.

Has anyone seen this happen before?  If so what was the resolution?

Note:  Not all vouchers with same scenarios error out on this rule (330).

Thanks!