OV transactions consolidate when reversing a receipt

Hi,

Any ideas on this one please?

We had a receipt against a single PO which had multiple lines but the two lines in question were for the same WO number so have the same Subledger and Subledger type (W).

The difference here is that the PO line numbers are different but the rest is pretty much the same(except for things like explanations which shouldnt impact).

The receipt was processed and an OV Document was generated with the two lines on it.  All good so far.

It was posted and everyone happy.

Then came the reversal of the receipt and a contra was generated with a new OV number, as expected.