I don't think anyone knows for sure. I did see in Theme Park-Strategies that apparently Disney can see the date of purchase from whatever ticket (third party bought or not) but with third parties, I would think they would see the date when the third parties (in this case AMs) batch purchased the tickets in bulk to sell and not when the ticket was eventually sold to you by AMs.
Either way I probably wouldn't risk it. WDW doesn't need to guarantee anything right now.