Wrong conversion of currencies in combinations

[KatiaW]

Hello,

I've started to create a catalogue in Prestashop 1.6.1.1.

Default currency - Euro (all prices in admin panel are set in euros), second currency - Russian Ruble.
Exchange rates are updated automatically.

The product has 3 combinations with different prices.

When shop is in euro currency, I can see following prices for each combination:
5,50 € / 15,00 € / 49,00 €

When viewed in rubles:
404 rubles / 413 rubles / 447 rubles

The first combination is correct because 5,50 € = 404 rubles (at today's exchange rate of 73.45 rubles * 1 euro).

This combination don't have "Impact on price". Price of this product is fixed as "retail price" in "prices".

The second combination has "Impact on price" of 9,50 euro, but the programm calculates it as 9 rubles. Correct price should be 1,101 rubles, but not 413.
Third combination has the same problem.

 

With other words the problem occurs when I add the amounts in the "combinations / impact on price." Despite the fact that the default currency is euro, the program takes them for rubles.

What is this bug and how can I fix this problem?

Thank you in advance!

Edited September 30, 2015 by KatiaW (see edit history)