That is a slightly different concept. I would say that if you have overwritten a file then it is gone.......... there is no software recovery method, and the forensics route would be destructive.
I would question whether even a government funded forensics operation would be successful, particularly on a drive that has been used for some time..... like which layer could you identify?
The only (partially) successful experiments I have read about were in carefully controlled; laboratory conditions with a new drive and the data overwritten once.
A lot of "recovery" software relies on being able to find the backup of the MTF (Windows) or finding contiguous files.
The tool I suggested is the best I have found for those "no hope" situations. My view is that a 64 byte file is pretty small, so it may not have been overwritten with any luck?