A. If an existing Member purchased into a separate membership if they use the same email, then they would cancel their old subscription and would belong to the new membership. If they use a new email and have 2 separate accounts, then they would have 2 separate logins and see separate things in each members area.
A. By default the members area is the same.But, we can customize it as needed to look different from the other members area.
They would still login at the same place, but we can have different headers, etc for the members area for Members in the new membership.