That's a good idea. I think that was one of my mistakes when I did my race change. Prior to that, I had a full story for my Blood Elf Death Knight, and I was quite fond of her character. But I failed to take that into account when she switched over.
One day a belf, and next day a blue berry space goat, with no RP explanation
She still feels alien to me when I log on her, and I can't think of any way to retcon her story to make sense in my mind. Oh well!