F-1 student applied I485 issues: urgent! tonywe2012-01-02 05:12:37

Hello,

I applied I485 on Sep 13, 2011 and my I-20 expires on Aug 2012. I heard that once one applied I485, the F1 becomes invalid.

Also I worked as Teaching assistant from Sep 13, 2011 and will work as TA in 2012. Does that mean I worked illegally from Sep 13, 2011?

Please clarify this problem.

Thanks in advance.

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