i changed my address shortly after submitting my application as well. i submitted the AR-11 online as well as mailed in the actual form and also changed my address with USPS covering all my bases. since then i have received all mail from USCIS at my new address with no problems.

until there is a decision on your case, even after you've done your bios, your online status will say initial review. if you have already taken your bios and have the stamped letter showing that you have, then i wouldnt worry about taking it again unless USCIS sends you an actual letter stating that you need to take it again.