Can someone tell if this really work on some case, decrease payment instead of preserve. AFAIK bump fee usually work as it says, same amount andbut much larger fee. As the electrum recommends, it probably only work on increasing fees.

Can someone tell if this really work on some case, decrease payment instead of preserve. AFAIK bump fee usually work as it says, same amount and much larger fee. As the electrum recommends it only work on increasing fees.