Guys i just got legendary edition pack & it's working fine, I didn't start a new game though.
I'm wondering if all features are working over the old sav game , the reason im asking is some features doesnt appear for example crafting arrows at the forge, dont get that option still. Any ideas? Thx in advance

Old saves should work normally. Are you sure the DLC are active? Do you use any mods?

Arrow crafting is added by Dawnguard, I think. If you haven't enabled that esp, it won't be there.