Foreign currency Valuation Issue

Dear All,

We have using the without delta method calculation in F.05 at 4.7

1. Foreign currency run performend on 30.12.2011 for customer and mentioned reversed date 04.01.2012

and got old diffrence and new diffrence and posted valuation as well reversal document same date

2 whereas we run the same on 31.12.2011 for customer (reversal date is 04.01.2012

System is not showing only new diffrence between first run & second run. it s giveing first run diffrence also alongwith second run

we only want to have second run diffrence only

Please give me the valable input sort out the issue

Regards

Venkat.