Sacred Haven of Debauchery

A couple of days ago, I accidentally deleted a working file. The recovery software is restoring files that were deleted several months ago.

I'll have to do it all over again...

That's strange. It should be easier to recover a file that was recently deleted than one that was deleted a long time ago. This is because when a file is deleted from the Recycle Bin, it is not actually deleted – the operating system simply marks the space where the file was stored as available for new entries. Consequently, the more recently a file was deleted, the higher the chance that nothing has been written over it yet.