So i ran through the entire OWB DLC and then I decided to recheck my perks when I saw Full maintainence was still there. I had not been back to the Mojave yet as well. Whats stranger is that when I began the DLc I got the message saying that I lost his companion perk and that he'd returned to his shack. Anyone else experience this?

Also does this mean that I now have one of the best perks in the game.... permanently? Can I now hire cass and leave her at mojave outpost and then benefit from her perk as well? Can this be done with multiple companions?