Our attorneys register an out-of-state or foreign order as a first step to having the order recognized and enforced in the State of California. Negotiate agreements.This might include dividing property, arranging spousal support, and deciding on child custody if you have children. For a summary dissolution, you prepare and file a Joint Petition for Summary Dissolution of Marriage (form. Learn how to file for divorce in San Diego in our comprehensive guide. Discover how to file for divorce in San Diego stress-free. Follow our clear instructions for a smooth process. I have to register this divorce decree in San Diego.