Thalim
instead of duplicating your view, create a new one (you will need to untick duplicate views) the problem with duplicating as you found out is that it will refer all your sections and elevations to the original view.
create your sections and elevations and change their type to the package you want, again duplicating an existing section might cause a problem, but check that.
like twiceroadsfool said, now you can controll sections and elevation in the filters! which is a great new feature in 2010
I'm sure you may already know that, but just in case
you can select multiple view and apply a view template to all (with the filter you have created)
that way you can hide any other sections or elevations you don't need to show...
hope this helps.