Heisenberg24

I recently noticed a few of my Pokemon are missing genders. When I click their name, it just shows the loading screen. It appears that all of them are from V3. I am still able to battle with them, however I am not able to give them a nickname as it says that only the original trainer is able to change the name. Back in V3, I would only catch my own Pokemon and train them myself so they never belonged to anyone else nor were they glitched in.