Originally Posted by RogerD408

You will fail the challenge and that will have no effect upon qualification the traditional way. The worst that could happen is they refuse to let you attempt another challenge in the near future (five years maybe?). I am only nine nights away for LTP yet my account status page shows 75 nights needed to earn Plat again. They don't worry about dealing with the corner cases in the marketing material and will handle it as it occurs.