Apex cloth disappears in UDK

So I am having issues with the apex cloth. I import my character who is wearing a shirt into udk and it imports just fine. But then i add apex cloth to the shirt and paint the weights and then export it and then now when i bring it into udk the characters shirt is not there anymore. I have no idea whats going on. it works fine in maya and looks great, but when i try to import it into udk the shirt disappears.
Does anyone know why this is happening?

Thanks in advance