I saw on [this article](https://pureinfotech.com/xbox-game-pass-ultimate-5-month-3-years/) and [this article](https://www.pcworld.com/article/397667/get-3-years-xbox-game-pass-ultimate-tip.html) that you can buy up to 3 years of Xbox Live Gold and then buy one payment of Gamepass Ultimate to convert it all to Ultimate. If I already have Ultimate, let it expire, then do this method, will this convert to Ultimate, or is this only for new customers who have never bought ultimate?
Thanks!