itunes Digital Copies - Upgrade to HD from blu ray

[squatting hen]

Sorry, I searched and I didn't find anything. I will start off by stating that I don't know much about iTunes, or all the in's and out's. I have though over the years redeemed a few codes through iTunes that were from blu rays. I just looked in my library and noticed that all of these are in SD, and not HD. With UV, I get HD from blu rays. Is there a way to make these be HD?

The titles are:
Back to the Future 1,II, III
Harry Potter and the Half Blood Prince
Ice Age: Dawn of the Dinosaurs
Marley and Me
Nights in Rodanthe
Nick and Norah's
Puss in Boots
Rio

All of these (except Rio) were redeemed long ago, back before I got into digital copies. I just thought I remember reading something about iTunes upgrading he titles to HD....but maybe not. Is there something I can do, or check/uncheck to get these in HD?

Currently, none of them are downloaded, just showing in my cloud. I don't know if I will ever watch these, as I don't currently have an iDevice, but that could always change, and I would rather get it corrected if possible.

Thank you.