So I was in the Bandori Wikia just reading random articles and....I have a question:

According to the wikia The Everlasting Guilty Crown was released on JP for the Umbrella Roselia event and I was like but wait that event was on EN a few years ago so why this isn't on the server? and while I was reading the Shin Ai article, it said it was realeased on JP's 2nd Anniversary so my question here is why these songs aren't on the EN server and will they ever be available on EN?

Sorry for the long post, I guess there are things that I still don't understand about the game and the servers and all that