I've prepared a small test scenario with a small amout of test data. If someone will have time, can look at it in the attachement.
I saw this post but it is not helping me with this issue:
Perhaps I found solution on my own.
If you should do a currency translation TCURR_TCURF from SAP as intervalmatch and inner join, be aware you use a LOAD DISTINCT ... RESIDENT TCURR
load * from copa_tmp.qvd (qvd);
inner JOIN (TCURR)
INTERVALMATCH (CurrencyDate, CurrencyLink, Type)
LOAD DISTINCT fromDate, toDate, CurrencyLink, Type
This is my solution.