I think this was the case since there was no opportunity to enter the CI$ amount. We're they just going to key in 1.2x the CI$ amount or was there another exchange rate applied? I'd like to see this setup to see if there's a "convenience fee" for paying in USD. The way DCC normally works is that the cashier keys in the amount in local currency, swipes/inserts the card, and that's when DCC happens.