On the seats and telescopic steering wheel, I would also check fuses "F" and "E",also 2 and 9, they would relate to the problem.
If the body harness were replaced, it could be that a few of the screws on the underside of the fuse box were left loose, that could cause it too.
I don't believe the door lock problem is related, though. All 4 doors are on the same pressure/vacuum circuit, so I would tend to think about maybe the lines inside the rear hinge conduit are cracked, or both rear actuators are bad, something along those lines. Are you sure the rear knobs are screwed on to the linkage? I have seen this before where the doors are actually working OK, but you couldn't tell visually because the knobs weren't attached to the linkage, they just laid there.