Larian Studios Forums Divinity II The Dragon Knight Saga / Flames of Vengeance (English) Divinity II - The Dragon Knight Saga Divinity II: Eco Draconis + flame Vs. DKS

I have Eco Draconis on the 360 and can get the update for Flames of Vengence but am I missing out on any other updates or refinements bu not getting the Dragon Knight Sage version?

If I do get the DKS version, do I have to do Eco Draconis over again or can I transfer my save file?