FX Valuation in TPM1 with Gross Amortization Procedure (2 FI accounts)

Dear Experts,

I have one question regarding the foreign exchange valuation in tpm1:

The Position Management Procedure include the Gross Amortization Procedure, where Premium/Discount is not included in Book Value. Therefore the premium/discount is posted as accrued/deferred account.

At the end I will have one asset account for the Nominal Value and a second asset account for the premium/discount.

My problem: I cannot split the FX Valuation in the 2 accounts. Do you have any idea?

Thank you in advance!

Andreas