This is something different. I get the borrowed part and so on. But I have seen many of my rewards just disappear. Rewards that were 0.01$ or 0.02$ just before the cutoff time. And once I happened to witness rewards even after the cutoff time, but soon after they disappeared. When I get some rewards and I'm able to claim them, those reduce the borrowed SP, so I won't really get anything until I have paid my debt back. The rewards that I'm talking about don't do anything, they just vanish.