Because of that one look Hunter gives to Crosshair’s charred head after stunning him, my guess is that the chip got damaged when Crosshair was burnt by the Venator’s engines on Bracca.
However he says he removed it. What Imperial is gonna allow that.
Maybe Rampart went along with it, knowing it could be a further reason to eventually dispose of Crosshair when the time came.
Your guess is as good as mine