All employment-based Forms I-485 go to Nebraska, How about Adva

Just found at USCIS website: Effective July 24, 2006, all employment-based Forms I-485 are filed with the Nebraska Service Center.
http://www.uscis.gov/graphics/formsfee/forms/i-485.htm

Anyone know where should I file for my advance parole? Basically it should be filed to the same center where I file my I-485. I filed my I-485 to california center in aug 2005. Since then, the location of where to file I-485 changed several times. I do not know where my I-485 is now. Should I still file to california center? Or Nebraska center?

Thanks a lot