The bulk update request #4956 is active.
create implication shadow_lugia (825) -> generation_3_pokemon (85371)
create implication shadow_mewtwo (121) -> generation_6_pokemon (73873)
Reason: Shadow Lugia only appeared in Pokémon XD: Gale of Darkness which was a part of the Generaton 3 side series
Shadow Mewtwo first appeared in Pokkén Tournament which was a part of the Generaton 6 side series
EDIT: The bulk update request #4956 (forum #367246) has been approved by @Rainbow_Dash.
Updated