If the Detached card was a Gear and this causes it to become present at a Battlefield, it will be Recalled during the next Cleanup. See rule 318. Cleanups for more information.
§ 435.4.a Core Rules PDF (officieel)
§ 435 Detach
§ 435.4 When a card Detaches from a Top-Most Card, its location is the same as the Top-Most Card from which it Detached.
