The simple fact is that the switch to TAJ was essentially a reset. All their casting decisions up to the point of swtching to DuArt have been retained. And because of that fact, unless a current VA quits/dies and leaves their role(s) open, or there's another huge upheaval, the cast will remain as-is.
That's why the current main cast is still the current main cast. It's why Zoey is still Zoey, Kenny is still Kenny, and Gardenia was still Gardenia. That's why Nurse Joy is still voiced by Michelle Knotz despite Bella Hudson coming back on board. And that is why Prof. Oak will still be Jimmy Zoppi, Tracy will still be Craig Blair, why any other character, casted or recasted, will remain as-is, and why May will still, to the unforseen future, be Michele Knotz. I'm not playing favorites, but that's just how it is, like it or not.
That's why the current main cast is still the current main cast. It's why Zoey is still Zoey, Kenny is still Kenny, and Gardenia was still Gardenia. That's why Nurse Joy is still voiced by Michelle Knotz despite Bella Hudson coming back on board. And that is why Prof. Oak will still be Jimmy Zoppi, Tracy will still be Craig Blair, why any other character, casted or recasted, will remain as-is, and why May will still, to the unforseen future, be Michele Knotz. I'm not playing favorites, but that's just how it is, like it or not.