It is possible to get a divorce modification with children (child custody) in Arizona. Call our experienced divorce lawyers (602) 254-8880.I would like to change the name of my child and amend the birth certificate to reflect the new name. To pursue a modification, you must file a formal petition with the court that initially oversaw your divorce. Complete all required paperwork: • Petition to Modify (the Petition). This informative blog post will guide you through this complex process as well as detail the legal requirements for modifying your divorce decree. Hire a Phoenix family law attorney from our firm to help you with the process of obtaining a legal modification to the orders applying to your case. The Phoenix divorce modification attorneys at Goldman Law, LLC are experienced in helping clients modify different aspects of their divorce decrees. You must file the motion to dismiss before you file anything else. In Arizona, the residency requirement to file for divorce is 90 days.