Yep, the exchange or CHO or CPs were the old generalised way of "classifying" a very rough amount of carbs foods had. I also think that exchanges are inadequate for modern carb counting/dosage ratios, and just add complexity and "backward compatibility" for no good reason. (I suppose some may find them familiar or intuitive, I never did, and a resolution of 15 grams is just not useful at all). They should just go grams all the way. If you get the choice to bypass bothering with exchanges, do it!
