Alarm Rules clear trigger

I'm starting use Alarm Rules, move some alarm creation from rule node but I find something not right there. When it clears alarm, Alarm Rules also replace the details too. My details all gone so I feel this is annoying. I still need the history of alarm and details.

Solution Alarm Rules Clear Condition should not replace enything other than clearing, except we fill in the Clear additional info. If we leave it empty it should do nothing with the details.