Pokémon HOME is a new app that enables Trainers to continue their Pokémon adventures beyond a single game system and manage their collection of Pokémon across many of their games. Pokémon HOME is available now on Nintendo Switch, iPhone and iPad (App Store), and Android (Google Play) devices.
Pokémon HOME was undergoing maintenance in order to resolve the Hyper Training information issue. To have your Hyper Training information restored, you must’ve moved any Pokémon you transferred from Pokémon Sword and Shield back to Pokémon HOME before maintenance began.
The maintenance period was scheduled to last from 01:30 to 17:00 UTC on February 25, 2020. Now that the maintenance period has ended, you can transfer your Pokémon from Pokémon HOME back to Pokémon Sword and Shield with their Hyper Training information restored.