Completing the Pokedex using PKHeX issue

[Playstation_Playa]

When I try to use PKHeX to complete the Pokedex in Sword, I encounter a problem where the Pokedex would recommend me to catch Pokemon that I already caught and since I already caught them, catching them again doesn't do anything so now the Pokedex is stuck giving me suggestions. Is this normal or am I doing something wrong?

[Prejie]

That is normal. I experience that in my complete Pokedex through natural means.