Lets run a testI think it might have been a timing issue in your instance. I do not believe it updates quotes.
I often go back to my posts to correct grammar/spelling and in the ZakS thread when I was quoted, I went back and changed the word like to likes and that wasn't updated in the post where I was quoted.
Im going to post a quote (not this one) then you quote it after about 2 minutes. Then ill change it.