Reg.Reply To All Behaviour

Hello…

Why lotus moving the mail-ids of To into CC field when I am doing ReplyToAll for the mail where To: field is having morethan one mail-id.

Is this is Lotus Default Behaviour?

If it is, is there any setting change which make the notes behaves like Outlook keeping id’s in To field in To Field only after ReplyToAll.

Thanks

Nivvy