[atlas] Logistics Q: probe "owner" leaving an organisation, but probe remains

Hi folks, maybe there's already an FAQ answer somewhere or it has been discussed before, and I missed it. Please point me into the right direction :-) Background: I handed out a probe (from an ambassador batch) and the probe was connected to the 'net. Now, a rather short while later, the "owner" of that probe left the organisation, and left the probe behind. It is still connected :-) What is the procedure or advice for assigning a new "owner" from the hosting organisation? Thanks, Wilfried