I am sure the IO will have the information about your case in pending when you go for the interview. it is good to have some expert legal advice here or you may have an infopass asking clarification in your situation.
Thanx varxx,
I spoke to the lawyer who did my U visa paper work. She said IO will know that you filled U visa but they wont the content. IO might ask you some questions regarding it thou. She said I am not required to take any U visa papers for AOS interview. But i think i will take everything i have just to be on safe side.