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no, the vote weights depend on the rshares and include the reverse auction system. Apart from the VP->mana change, the rshares got a -50M downshift with HF20. So both of them were changing, and both are calculated at voting time. The only thing happening on payout is the distribution of rewards based on the sum of these rshares wrt. the recent claims (author) and the weights wrt. to the total weight (curators). On payout, only the distribution of unclaimed rewards changed with HF20.