Rule 725.2
If an Attached card has a Passive or Replacement ability that applies during the process of Detaching or a Triggered ability that triggers off of Detaching, that text exists and can be processed as it Detaches.
Loading Arbiter…
If an Attached card has a Passive or Replacement ability that applies during the process of Detaching or a Triggered ability that triggers off of Detaching, that text exists and can be processed as it Detaches.