Double redeeming a movie.
So I bought a few movies on Blu-ray and redeemed the digital code and have digital Hd for them. I have now repurchased some in 4K and now have a 4k digital code. Has anyone redeem a movie again and does that upgrade your movie to digital 4k? Asking because it seems nearly impossible to upgrade an hd digital copy to 4k. I hope this is the right forum.