I heard through the grapevine that the learning objectives are in the process of changing. I am not sure when they will come into force but I believe a lot of the duplication across the subjects has been or will be removed. I suggest you give someone like Alex at BGS a call and put the question to him. It might also help you plan when you embark on the study for the exams and will make sure that you don't waste any time studying anything unnecessary.