3 way matching

Hi,

I have a Q. We are using only 3 way match for our POs.

While doing data conversion, an order was transferred from legacy system into JDE as an outstanding commitment with a qty of 1, and a total of $37,102.80. An Invoice was then received , being for a total of $31,420.80 ex GST. When this was received into JDE, as it was in as a qty of 1, the total amount was receipted.

We now have another Invoice, being for the final amount of $5,682.00 ex GST. Problem is as the order was fully receipted due to the order qty being 1, and JDE wont let us pay another Invoice as there is no more qty of goods open, yet I assume there is a commitment of $5,682.00 showing up somewhere. How do we handle this scenario?