The info on USCIS website is as follows,
If you currently reside in Alaska, Arizona, California, Colorado, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, North Dakota, Ohio, Oregon, South Dakota, Utah, Washington, Wisconsin, Wyoming, Guam or the Commonwealth of the Northern Mariana Islands, send your application to the USCIS Lockbox Facility at:
USCIS
P.O. Box 21251
Phoenix, AZ 85036
For express/courier deliveries, use:
USCIS
Attn: N-400
1820 E Skyharbor Cicle S, Floor 1
Phoenix, AZ 85034
Now my question as follows
So, for example my District Office is "Saint Louis Field Office" and I live in Illinois, now if I move to Arizona, and the District Office would be different in Arizona (Phoenix Field Office) , will there be a delay ( or no delay) of 1-3 months in N-400 processing , I am confused. Please clarify.