It is true that you have to take Foundation all over again, this time in Creative Multimedia. That's the rule of FCM. Or perhaps you should try to ask the FCM office in case there's any changes?

To understand more about the majors, ask FCM seniors that you know from diff majors. Or else, seek consultation from your academic adviser (but then who knows if the adviser knows anything about FCM?)

Job opportunity and salary wise I don't know much so not in a good position to comment