Dance Central tracks can be exported to Dance Central 2

Will cost 400 Microsoft Points to do so
The “freestyle” sections from the first Dance Central are a part of the exported tracks, even if you elect to disable the freestyle section on Dance Central 2. The freestyle sections offered no choreography in Dance Central.
Dance Central 2 is on track to arrive October 21st in Europe and Asia and then on October 25th in North America. Some retailers will be bundling a Microsoft 400 Point card as part of their promotion of Dance Central 2 if you elect to pre-order.