Hi as most of you know the legacy Halo (Halo 3, Reach, ODST, Wars,and maybe 4) are going to be unsupported by Microsoft for Online activities from 2021 December. My question is what if I decide to buy a new Halo after 2021 Dec and want to download the Map packs? Will they be still there? Should I download them in advance? Or is it possible to transfer them from someone else? Thanks!