Hi there juggernautproductions,
Unfortunately we've had a few users report this same problem (as raincoaster mentioned above); and I'm very sorry to say that these posts seem to be gone for good. I am so sorry.
Can I ask you a few follow-up questions to help us pinpoint and eliminate the problem?
About how long did you spend on the draft before you went to post?
Did you navigate away from the screen at any point while you were writing?
What browser and version were you using when you posted?
About what time/day did this happen?
Thank you so much for your feedback, and I do heartily apologize.
It appears that unless you use the edit post page (Dashboard > Pages > New Page), the autosave is not always working correctly. I recommend going to the edit post page in order to ensure your work isn't lost.