NOT being a stickler but
There are 3 ribbon cables connecting the 3 drives to BOB. I did not mark which one goes where but I doubt it that they all went to the same drive as before. Therefore I would say yes I swapped them
TO me this says you don't know if you did or not(;-)
But that is just MY opinion, but precise test proceedures are critical sometimes and assuming well you know the rest.
Just a thought, (;-) TP