TPM/Bitlocker

[muno]

Hi.

The situation is as follows:
Domain with AD and bitlocker GPO in place. Computers backup their bitlocker recovery key to AD and it works fine.

Whenever the TPM chip gets reset (usually with motherboard change), the TPM chip needs to be reconfigured for bitlocker to work again.

I've done the following:
Replace motherboard
Start system, enter recovery password to be able to boot, get old keyID from bitlocker.
Init TPM with old recovery-password.

The question is, do I need to re-backup the key to AD (I did this, and the computer object just got another msFVE-RecoveryInformation object as child which held the same data as before)?
Or, should I backup the key to AD only if I use another password during TPM init.

Or, should I not use the old recovery key as password in the first place?

[muno]

Nevermind.
I verified the TPM-OwnerInformation gets automatically written to AD upon init and the old RecoveryPassword is used by GPO.