Can manual pitch correction keyframes be saved?

I'm in the middle of my first manual pitch correction and am wondering

(1) if I click apply, it renders the audio and the keyframes are gone?

(2) after I click apply, if I want to make an adjustment (let's say I overcorrected a note), I would have to apply a new pitch correction effect on the rendered audio?

(3) is there a way to save the keyframes and make fine adjustments to them and then apply it to the original audio, so that the final audio is subjected to only one pitch correction, instead of multiple corrections?