How do you mass-change individual notification settings? Like... if you want everyone to receive an inline notification for the new "mention" function, after upgrade, how would you do that? This is just an example I am not sure how new settings are set after the upgrade as I have not done it, but there are some other settings I need this for as well. Is this not possible in the acp?

I did this by setting the new user defaults in the ACP and then deleting all the rows in the core_notification_preferences table.

I meant being able to change one setting for everyone, not all settings for everyone. But that may be an option if I can't, thanks.

Would anyone know if individual queries would be possible? Don't need it right now just yes/no, thanks!

You can reset that member by deleting the rows in core_notification_preferences for just that member id. If you look in the table it's fairly easy to see. There's no ACP / simple way though.

Not one member, all members but one setting in the list.