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Except....when you 'lock' a reusableview. Then the view is tied to the data it shows and when opening a view for other data the view will not be reused and . Therefore a new view will be opened (if no other resuable non-locked view is open). A lock image will be shown in the tab of the view to show whether it is locked.
If you want your view to have this behaviour you should use IReusableView.