http://www.projectsam.com/Support/Frequently-Asked-Questions/Symphobia-2/
01
Is Symphobia 2 a replacement for the original Symphobia ?
No! Symphobia 2 is an evolution and extension of the original Symphobia.
You will have maximum possibilities when using Symphobia and Symphobia 2 together.
Still, it is not required to own Symphobia in order to use Symphobia 2.
02 Is there an upgrade path from Symphobia to Symphobia 2 ?
Symphobia 2 is not a replacement for Symphobia. It is a unique product. This is why there is no upgrade path.
Owners of both Symphobia and Symphobia 2 will have access to an exclusive bonus patch. Read more about this on the product page.