How to avoid re-register device with Windows Autopilot after flash UEFI BIOS image ?

[NickWangInsyde]

Hi Project Mu team,

IBV (Independent BIOS Vendor) support to restore or upgrade UEFI BIOS image, and it will kepp some critical UEFI variables and erases others in flash part. We found that if below UEFI variables are erased, it will cause the device is unrolled and it should re-register device with Windows Autopilot.

    // Variable GUID, Variable Name
    { {0xD41C8C24, 0x3F5E, 0x4EF4, {0x8F, 0xDD, 0x07, 0x3E, 0x18, 0x66, 0xCD, 0x01}}, L"UEFISettingsCurrent"},
    { {0xD41C8C24, 0x3F5E, 0x4EF4, {0x8F, 0xDD, 0x07, 0x3E, 0x18, 0x66, 0xCD, 0x01}}, L"DfciSettingsCurrent"},
    { {0x3a9777ea, 0xd9f,  0x4b65, {0x9e, 0xf3, 0x7c, 0xaa, 0x7c, 0x41, 0x99, 0x4b}}, L"DfciPermissionCurrent"},
    { {0xDE6A8726, 0x05DF, 0x43CE, {0xB6, 0x00, 0x92, 0xBD, 0x5D, 0x28, 0x6C, 0xFD}}, L"DfciIdentityCurrent"},
    { {0x4123a1a9, 0x6f50, 0x4b58, {0x9c, 0x3d, 0x56, 0xfc, 0x24, 0xc6, 0xc8, 0x9e}}, L"DfciDeviceIdentifier"},
    { {0xc6bbd941, 0xbfe0, 0x44b8, {0xbe, 0xdc, 0x4,  0xd3, 0xa7, 0xe9, 0xa,  0xd9}}, L"_SPP"},
    { {0xc6bbd941, 0xbfe0, 0x44b8, {0xbe, 0xdc, 0x4,  0xd3, 0xa7, 0xe9, 0xa,  0xd9}}, L"_IPCVN"},

My question is that should IBV keep these UEFI variables after flashing UEFI BIOS image if it does not want to impact DFCI status ?