Is there a way (and if so how) to add a conditional trait into PCGen?

Specifically what I am trying to do is add a racial trait to the Kitsune race that will replace two of the normal racial traits. I have successfully added a trait called "Naturally Skilled" into the program and it shows up/ works just fine however I need to cut out two of the other traits you would get naturally if you choose this trait.

Starting racial traits for a Kitsune: Agile, Change Shape, Kitsune Magic, Low-Light Vision

What it should look like if I choose Naturally Skilled is: Change Shape, Low-Light Vision, Naturally Skilled

So essentially I’m replacing both Agile and Kitsune Magic for Naturally Skilled. Is there a good way to code that in? I’ve been trying to find where in the code to put arguments like that but its like sifting through a barn full of hay for a hay colored needle.