I'm moving back to my old address that I've been in since coming into the U.S but is
The information they ask you for in the renewal application pertains to only info since your last renewal. Whatever address you've resided at since your last renewal, however short or long it was, you should put it down.
FYI, you are supposed to inform USCIS everytime you move within 10 days by filling out AR-11 between renewals. This is true even for permanent residents.