A Huge question which will have me determine a lot

[Lee-yoshi]

Its not a question that has been answered by Sonic Team yet unfortunately. However, i would have thought that your game save will be able to transfer onto the final version of the game when its released, as all game saves will be stored on the same server, and all game ID's will stay the same.

I'd say i'm about 80% sure that your character information will be transferable (Lee-yoshi word!) to the final version of the game when it is released.