Treasury TPM18 accounting for exchange gain/loss

Hi,

I am new with treasury. I have created a Forward transaction with Product Type 60A & Transaction type 102. I was able to post TBB1. However when I am trying to post derived flows using TPM18, I am getting two accounting entries instead of one.

I have incurred an Exchange loss. Hence the entry should have been:-

Difference in exchange.... Dr 2000 (Loss GL)

To, Foreign Exch Inv........ Cr 2000

However I am getting the following Accounting entries:-

Foreign Exchange Inv....... Dr 64000

To, Difference in Exch....... Cr 64000 (Gain GL)

Difference in Exch............. Dr 66000 (Loss GL)

To, Foreign Exch Inv......... Cr 66000

Please suggest what could be the issue.

Thanks,

Sumit