Do not mix. I have encountered so many sites, not all but too many to count where they do not render postal codes correctly. As soon as I'm done typing the first part and skip to the next field, it messes up. For instance, I type in M6P then tab or mouse cursor to the next field, it turns into -6- (dashes). I don't know if other Canadians are facing this same issue but it's very annoying. Is there a remedy?