Brakes Rotor Wheel bearing Hub assembly?

[Starbrick Jim]

I am working on front axle of CJ7 1983 Renegade . I see that the front rotors are part of the wheel bearings/hub assembly. I want to replace the badly rusted rotor but it all looks like one unit. For replacement parts, I am not finding the rotor/hub/bearing assembly available as a unit. Did Jeep make a change or an update to this system? I find no ability to separate the rotor from the existing hub, see attached pictures. I am asking for thoughts and directions as I am on pass front and will also repeat the process for driver front. Thanks.