Adding maidens into schedule via the showcase files but they automatically are a class 2 race, am I doing something wrong or is this supposed to happen?

Also I saw when looking to download a schedule, that someone added 2yo sellers to mimick the breeze-ups. I want to add something similar in my own schedule so am I best just adding 2yo selling races on in game auction dates?

One last thing, seeing as I am adding these races via the showcase files will they show up in a horses feature race wins? If so is there another way to add races into the schedule? I don't really want it to show a 2yo seller in a horses feature wins summary

Thanks.