Exchange rate

Hi, we are using R12, some people has send me information about it, but an i had notice this If we created an invoice in USD Exchange Rate is 10 ,the tax amount is 10 usd the we paid the invoice with Exchange rate 11 , when we review the accounting the exchange rate only for the tax lines is the same to the invoice, tax are credit to exchange rate 10 and then debit to 10, we do not use the exchange rate 11 for the tax line in the pay. the entired transaction is related to the exchange rate defined at the invoice.


2. Created an Invoice is USD exchange rate is 10 the tax amount is 10 usd the we paid the invoice with exchange rate 11, when we review the account the exchange rate use for the tax line at the invoice is 10, and the exchange rate use at the payment is 11 here we had a debit and credit for the tax line using the same exchange rate ( the exchange rate defined at the payment moment).