Do Dialga, Palkia, and Giratina respawn if you KO them or run away in ORAS?

Question

In another question I asked, I confirmed that you can encounter the Weather Genies again without doing the Pokeleague, even if you faint them or run away. Does this also work with the Sinnoh Dragons? Or would I have to do the Pokeleague again to respawn them?

(Can't test this myself because I don't exactly have a spare Lake Trio or Palkia just chilling in my PC)

Comments

As far as I know, there aren't any important Pokemon with guaranteed encounters like this that you can't defeat the Elite Four to reset, at least, starting when the possibility of resetting them started.

Answer 1

To encounter them again after fainting them, you will have to defeat the Elite 4.

Comments

Source?