haoyun04,
Do you know if you’re duplicate A# issue is fixed?
I am in similar situation and it's causing a big headache.
USCIS had issued a name check based on old A# in Nov-2004 and on July-1 I got an email from FBI that my name check was cleared and result was sent to USCIS.
Meanwhile in May-2005, USCIS realized that they had issued the same A# to more then one person and hence issued a new A# to my I-485 case.
Now the problem is, Name check was done using old A# and it is not showing up in USCIS system since my I-485 has been associated with new A#.
I am struggling to get this corrected calling TSC, Attorney and Congressman. So far no luck...
After several calls, they issued new finger printing notice using new A# that I completed in June but they forgot to make a Name check request again to FBI.
So, according to USCIS my case is pending Name check and according to FBI it was cleared on July-1 using old A# and they do not see any name check using new A#.
I am stuck, going back and forth with these guys.
Now, I have made an appointment with local USCIS office to discuss this issue.
Hopefully they can understand on what the problem is.
Anybody who has dealt with similar situation, please help.