That's odd how that can work.
I know on the ones I redid the melody had to be altered and the chords had to be aligned differently to my voice after I started with bringing the key up.

Sometimes when I do a new song it sounds like it is in a lower key in my memory.
If I do something in an E for example, it comes out like a D in my memory.
Never higher though.
Does that happen to anyone here?

Must be all that dark music.