TRM - Money Market - TBB1 Wrong exchange rate difference posting

Hi,

Once I run TBB1, the amount for the exchange rate difference (DBT_008) is wrong.

My locall currency is the PEN (Perú).

Example:

I modify this operation with a decrease (1110) and interest capitalization (1150) on 15.04.2015:

Through TPM13 I can see what is about to post:

The system will post 6,001.01 for "Forex loss", however, the real exchange rate difference is:

02.01.2014      20,966.48 USD  58,622.28 PEN  2.796

15.04.2015      20,966.48 USD  65,415.42 PEN  3.120

                                                6,793.14 PEN

If I change the movement (TM_52)  "1150 - Interest capitalization" for a "1200 - Nominal Interest" and save the operation the result is correct:

Then, If I change the operation to the movement 1150 again the result is always good:

Besides, If I continue modifying the operation with another Interest capitalization I find the same problem (wrong amount for the exchange rate difference) , and this solution doesn't work.

02.01.2014      25,000.00 USD  69,900.00 PEN  2.796

08.06.2015      25,000.00 USD  78,825.00 PEN  3.153

                                                8,925.00 PEN

I have probe changing some parameterizations but didn´t work:

- Change "Translation Cat" to Always translate: the image below show how the system is now, the example explained was did with this. However, I try with Always translate

- Change some checks:

Could you help me please.

Thanks,

Adolfo