Relock bootloader + DRM restore - Z3C (D5803) using TWRP

Hi,
I just want to share my observations with you:
In just a few words: restoring TA (Trim Area) with TWRP seems to lock bootloader and restore DRM functions.
Of course: restoring a TWRP backup made before the unlock!!!

Details:
1) initial I'm on Stock KK (23.0.1.A.5.77)
2) root using giefroot_v3.1
3) install XZDualRecovery
4) flash latest firmware 23.4.A.0.564+root+XZDualRecovery (packed with PRFCreator_v0.9)
5) perform TWRP backup !
ACTUAL STATUS - decided to unlock.

6) unlock bootloader (phone reboots and performs a factory reset!!! )
Attachment 3476604

7)Restore backup from step 5 (including TA)
Attachment 3476605
Attachment 3476608
Here you can see Root status changed back to: "Bootloader unlock allowed:Yes" and all the keys are back.

How i notice this? Soft bricking my phone :D .
Just wanted to use AndroPlusKernel so I unlocked bootloader, restored backup, flashed AndroPlusKernel and..... didn't boot.
After revived my phone went testing why....

I hope it helps!

Attached Thumbnails