The new option:
// Ban any user that is banned in another channel
//ban_channel_bans fopnu:channel:pl3bstp4ku4djveqb5m3pyjpwwgtrm5oax74rrzht224oloasecq/Testing

Q1: will this option copy all existing bans in another channel or only import future bans?

Q2: is this function limited to a single channel or will it add bans from several other channels?