Larian Studios Forums Divinity II The Dragon Knight Saga / Flames of Vengeance (English) Divinity II - The Dragon Knight Saga Have Original ED for PC. Do I Need it for DKS?

Hello. I'm sure the answer to this is somewhere in the forums, but I can't seem to find it. I have the original Divinity 2: Ego Draconis for PC (hard copy). If I purchase the Dragon Knight Saga for PC via download (Amazon.com) does it include the original with all the graphics engine improvements and the Flames of Vengeance expansion? Basically, is my original DVD trash can fodder, or do I need it for the DKS to run? I never got beyond level 13 with the original ED, it just ran too poorly on my fairly good PC.

Thanks.