Single post in 2024 Update Phase 1: Lab + Ranks

apologies if i misseed it but i'm a little confused. so i get that my rank would become ultra after the update, but would i be given the rewards from past ranks that i already earned on update day? so like the gold and silver charms. or would I have to do something to re-earn them? secondly, and this may be because i don't fully understand the shiny ranks, for the rank chart, does obtaining the rewards require both the shiny rank and the normal rank? or is it one or the other? and then what happens if i have a rank but then later get that same rank in the shiny ranks (e-sss). apologies if this is self explanitory to others, i'm just a little conffused about how rank rewards will be rolled out for existing players.