回複：回複：回複：86321:B1/B2 valid visa holder, do I still need to apply

Do you mean that my using B1/B2 visa cut off the I-485 that I filed in 2007? Is there any legal basis for this?
-You can find this kind of information from USCIS website or other websites.

Here is some:

http://www.hooyou.com/i-485/faq.html

Q: May I leave the country while my adjustment is pending?
A: Yes, but you must obtain a travel document (advance parole) before you leave the U.S. Otherwise, you will be considered to have abandoned your adjustment application, unless you have certain status, such as H or L.

Also see:
http://www.antone.com/articles/advance_parole.php