Price difference account in MIRO

Hi Experts,

I have an issue during posting a Invoice Verification in Foreign Currency.

While doing Invoice Verification in MIRO in Foreign Currency, The user has been changed the GR/IR price manually in Miro, due that system is posting to Price Difference and we have activated KDM ( Exchange Rate difference between GR and IR) and we are using Standard Price for Raw material. When i simulate system is posting to Price diferrence in Foreign Currency, but when i display in Local Currency system is showing Price Difference as Zero Value, the difference between is posted to Exchange rate gain or loss in Local Currency.

The Entry displayed in MIRO as below

USD JPY

Vendor 30,316.32- 2352365-

GR/IR 30,258.72 2659348

Price Diff 57.60 0

Exch Rate Gain/Loss 0.00 306983-

Can any one please tell me, why system is not posting price difference to Local Currency.

Your valuable inputs will be rewarded with points

Thanks

Sivanand KP