I think the only recordings that wouldn't NEED to be redone are some of the CC ones, like when you're doing the word fly you'd have an "fl" "_lI". However if it's not hard to record consonants I encourage recording a new set for each pitch since changing your tone can change how your consonants sound.
If you're worried about organization you can probably make the folders within a pitch folder and the oto should pick it up with editing (I think? IT's been a while since I tested that) or just migrate everything into one folder, or like Adlez says OREMO can put direct aliases on everything so they don't even need to be in the same folder and you can just have folders like CCV_A4 or whatever.
If you're worried about organization you can probably make the folders within a pitch folder and the oto should pick it up with editing (I think? IT's been a while since I tested that) or just migrate everything into one folder, or like Adlez says OREMO can put direct aliases on everything so they don't even need to be in the same folder and you can just have folders like CCV_A4 or whatever.