Secondary Ledger exchange rate

We are using the Secondary Ledger enhancement that allows us to link a tax book to a secondary ledger (EUR) that is in a different currency, but same COA, as the Primary ledger (HUF).  Customer wanted to see the amounts in EUR in the FA tax book, instead of seeing them in HUF but transferring to the GL in EUR, so we created an exchange rate that is 1 HUF = 1 EUR. We created a secondary ledger that uses this HUF = EUR rate type as its default. If FA, we created a tax book, linked it to the