> I gather that when I change options in the configuration window,
> these changes will only effect new subscribers and not existing
> subscribers.  How do I change subscription options for ALL
> subscribers?  For instance, I want to make REPRO and ACK the default
> for all existing subscribers.

This has two be done in a two step process. You did the first step, but
that applies the change only to current subscriptions.

For future subscriptions, you also need to edit the list's configuration
to include the "Default-Options=" keyword which should look something like
"Default-Options= Ack,Repro".