Niantic and The Pokemon Company recently announced the ability to move Pokemon from Pokemon GO to Pokemon HOME. The problem was that if you transferred some of the Pokemon they would have the moves of their original form. This will be fixed and they will soon have their correct learnset according to The Pokemon Company. However, the company says that this will be done slowly in waves and not all of your Pokemon will be fixed at the same time.
“The Pokémon Company have put out their plans to fix Pokémon that were affected by a bug in the Pokémon GO to Pokémon HOME transfer. For Alolan Form and Galarian Form Pokémon, for a short time if you transferred them, they’d have the moves of their original form. Over the coming weeks, if you have these Pokémon in Pokémon HOME, they will automatically be fixed to have their correct learnset. This will be done in waves and not all Pokémon will be fixed at the same time”