I’ve taken a look on
and followed to etherscan links,
and found something interesting.
if I’m not mistaken that line means that any spell executed in a past (so the one that has won anytime in a past) Cannot return back into power, because even if MKR holders stake their tokens back and
cast() was executed it will revert because of that line
In other words all MKR’s on all executives with status Passed (ones that has been Hats once but are not anymore) are pointless and could be well enough returned to the voter.
That is actually also much different that I was expecting. I was quite sure until recently that executives can be reused, so we can go back to old settings of a system.