x86_64, c86_64, and Arm_64 are supported on both HCI and SCP. The former two use Hygon CPUs, and the latter uses Arm CPUs. For the compatibility list, visit https://www.sangfor.com.cn/compatibility/.
To verify the c86 architecture, you can import SCP in c86 to HCI in x86 for quick verification, but you are advised to keep architecture consistency for final verification.
You cannot import SCP in Arm_64 to HCI in x86_64 or c86_64.