NV2 handles multiple Balance Sheets in the same set of books like NV1 does. Unlike NV1, NV2 has a tags feature which allows you to view financial data on a report by a specified tag that you can customize. See the NewViews 2.0 manual for more information on the use of TAGS.
I suggest that you contact Jack Peters at firstname.lastname@example.org in regards to combining serveral sets of books into one set of books to import into NV2. He should be able to advise you on the costs involved in doing this.