Hi again, @Tgratier!
You can clear tamper detect notifications even when the lock tab has been cut (production mode). Keep in mind that if a tamper detect that has self destruct mode set, it will not matter because the zymkey destroys itself at that point. Once in production mode, the tamper detect actions cannot be changed.
However, in the scenario you show, you can have one TD configured for the notify action and the other one configured for self destruct. If the self destruct one is tripped, then the key will be destroyed. If only the notify TD trips, you will get a notification event which can be cleared. The self destruct TD can never be cleared.
Am I understanding your use case correctly?