That's like seeing a free update in a game you don't own, and asking why you can't play it. Of course you need the latest version of the game to have access to its contents.
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Even if it's previously owned content?
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You could say its previously owned content, but if say VoG was updated to new levels with new gear, yes VoG isn't new, but this new version would still be a new addition to the game as such you'd need the latest version of the game in the first place