Then you should probably get an admin to search the area where trashed threads get placed (trashmaster or whatever it's called), because that doesn't appear to be true (unless it got deleted, which is possible):
Dates and times can easily be changed. If what you're saying is true, then someone (I think JA+ can search) should look for your old application to verify you posted it before July 24, 2013 (earliest one I've bothered searching for), because I sure can't find it.