Not OP but you could probably hook the parachute to constantly NOT be deployed, like a deadman's switch, so that if you lose power it just deploys automatically.
So... when you unplug the battery to replace it, you're greeted by a popping parachute?
Yes, it's just part of the process for you to disarm the parachute in that situation. Sort of like it's sensible to disarm the airbag before steering column changes in some cars at least.