I am not sure if the IO helped in any way to get that file, after I wrote a letter to him regarding oath letter and missing file. I will let you guys know if anything comes up.
I think USCIS act like a robot sometimes a very simple matter can throw them off track because everyone there just does his job by the
book and routine in the book has some bugs. Such simple matter can be easily solved if anyone there throw in a little bit of human intution.
So it can help a lot if you write to yoru own IO for personal help. It is not a proper behavior to ask for personal help. But in case
of action after interview, it is perfectly OK --- Why? because that is onme check box being checked on the N652 interviee result
letter --- it says please contact the immigration officer NAmed on this letter if youhave any issues/inquiry/problems etc