This guide provides a structured reference for partners and FAE engineers to migrate from Fortigate to Sangfor NGAF. The migration process includes six key phases: Pre-migration preparation > Configuration conversion (automated & manual) > Device deployment and baseline setup > Functional testing and validation > Cutover and rollback > Post-migration optimization and audit. Network objects, service objects, security, and NAT policies can be automatically converted, while VPN, SD-WAN, authentication, security features, logging, and HA require manual migration. Following this process ensures a controlled, accurate, and seamless transition.