This is the update’s secret legacy. When Pokémon HOME launched in February 2020, nobody expected it to connect to the 3DS. However, internal scripts in Update 1.2 reveal that Game Freak was building a “bridge bank”—a temporary server buffer that would convert Gen 7 data (battle-ready marks, Z-Crystal flags, and even the “Alola Champion” ribbon) into a format that Pokémon Bank could later translate to HOME.
Specifically, 1.2 fixed:
The main purpose of the update was to fix a serious glitch that caused game freezes during "Live Competitions" in link battles. Here are the specific issues addressed by the update: 1. Competitive Battle Freezes (The "Curse" Patch) pokemon ultra sun update 1.2