Firewall Migration Tool
SonicWALL have developed a migration portal to assist moving the configuration from an older SonicWALL firewall, or from some competitors product.
Generally, you can export a config (.exp file) from an older SonicWALL and import into a newer firewall with few issues. If you have problems you can use the migration tool.
If you are replacing a Cisco PIX/ASA, Check Point, Juniper, Palo Alto, Fortinet or Watchguard with a new SonicWALL this may help - although in a lot of cases you may want to manually configure from factory to check all is relevant.