@SonictheInclusiveHedgehog What I found in the
FAQ answer is significantly more restrictive than what I read your statement to mean. The FAQ says that close-votes for close-as-dup with the now-closed question as the dup-target are invalidated to prevent circular closure. That I was already aware of. I thought you were saying that all of the dup-target's close-votes were invalidated (i.e. including those for non-dup reasons and with different dup-targets).