Promotion/Remake

I was in a promotional series to go from Silver V to Silver IV. Game 1 was a win. Game 2 was a remake, which was apparently counted as a loss. My match history reflects this. The other team had an AFK and the game was remade, but I was given a loss in my series. When we lost game 3, I was denied my promotion. I don't believe this is an intentional element of the remake tool.