I lost my whole Lvl 60+ Team: The frustrations of being a pokémon master

[Zac]

All the pokemon in my boxes on silver turned into ivysaurs
when I withdrew the ivysaur that use to be sudowodo all the other ivysaurs disappeared forever
I still have that ivysaur , it is now a venasuar named sudowodo and it knows karate chop in 3 places for some reason