You should use your best reasonable efforts to find the correct address. The court is required to give notice to the accused under the provisions of O.C.G.A. 17-4-40(B). The longer it takes to provide the court will a proper address for the accused, the longer the case will take to be heard.
The court, may, in appropriate circumstances refer you to file your criminal case with a local police agency rather than trying to handle it yourself. Law enforcement officers are exempted by state law from the warrant application hearing statute.
However, if no one can find the proper address for the accused, it becomes very difficult for the criminal case to proceed and difficult to find and arrest the accused. Getting a correct and current address for the accused is in your best interests.