cost calculation with different currency in purchase trade agreement

hy,

i purchase same items in EUR an some items in USD. All my purchase prices are stored in trade Agreements buying at different suppliers.

my company currency is EUR. currency Exchange (Standard, EUR - USD) is setup and works.

so i cretaed a cost Version and cost group to calculate my cost Prices and sales Prices based on the purchase price trade agreements.

for items with trade agreements in EUR ist works, but for items with trade Agreements only in USD ist doesn't work, cost and sales prices are calculated to Zero.

Are there any parameters or setups to do that cost version uses currencies other than company currency?

How to calculate cost an sales Price in Company currency when purchase trade agreements Exits only in another currency?

thanks anra