USCIS published a revised Form N-470, the Application to Preserve
Residence for Naturalization Purposes, on February 11, 2013. The edition
date of this version is 1/03/2013. USCIS comments that it will accept
older editions for a total of 60 days. Starting April 12, 2013, the
federal agency will online accept the 1/03/2013 edition of Form N-470.
The new edition of Form N-470 includes a single filing address. All
individuals filing this form must mail it to the Dallas Lockbox
facility. This new, centralized filing location will, according to
USCIS, “streamline intake functions, enhancing customer service and
improving operational efficiency.”