if you go to the edit options of the original post you'll see a box called parent post, where you would enter in the ID of this new post, since the quality is better it becomes the parent.
Yeah this is from the TSR OVA. Ahh good old Tessa. I wish FMP would just make another 13 ep series. I know there's a TON of material left with all those light novels, but they could at least not leave us completely out in the cold like this. It's been 4 years! Give us something damnit! The story's not over yet!