Currency adjustment - adittional currency


I am wondering, if I use the currency adjustment and filtering on currency code, which table will the job filter on? I am choosing to adjust both customer/vendors, bank and additional currency. In some cases i have open items on customer in a currency (ex EUR). When filtering the currency (EUR) and running the adjustment job i get no adjustments, when removing the currency filter I will get the adjustmens I expected.

And also another case, when LC is EUR and additional currency USD. If you are posting an invoice and payment on two different periods so that the USD currency rate is different when matching the payment with the invoice. I find the additional currency amount in USD to be different for the transactions, but no agio postings will be made. Will there not be any agio postings on additional currency, when currency = LC?