(Original post by I dunno)
I am not sure completely about what your asking. But here is what I understand of it:
So your doing maths and further maths. You want to make sure your Maths A level is at an A or A*. Your D1 counts as a maths module and your S2 as a further maths module. You would like to see if you can switch them so that your S2 counts as a maths module and your D1 as a further maths module.
Ok so thats my understanding of what your saying... apologies if that's not what you want to know:
You can switch D1 and S2 but only if you have done S1 and your S1 mark is also counting towards your Maths A level.
Basically your maths A level will consist of c1 - c4 and then two optional modules.
They can be 2 level 1 modules ( so any combination like this) :
Or a level 1 and a level 2 module :
(Note that if your going to use a level 2 module then you must have initially done the corresponding Level 1 module).
Finally yes it will be done automatically. Schools always ensure that the students A level Maths grade reaches the highest possible grade and then focus on Further Maths.
Also note I did my A levels in 2009 but .. I don't think much has changed from then
Hope I could help