I made a thread yesterday about my Heracross turning into the Shelgon i got for trading my dragonair for it in Blackthorn. I logged back in a bit later after switching out that shelgon duplicate, came back in later and i had my heracross again and thought it was over, But it seems whats happening is my 6th slot pokemon is randomly becoming that Shelgon, Same stats, same held item as the one i got for my dragonair and is ID 51433010 when it replaced my Heracross, And then it happened to my 100 Gengar, I switched to my dugtrio, logged out then back in, and my dugtrio is now the shelgon and my gengar is back to normal. My actual Shelgon i got from the trade is ID 51433011, 1 above the duplicate apparently. I feel like this is gonna keep happening and wondering if it can be fixed or should i just get rid of the Shelgon and see if it stops duplicating?