Lost all of my Bag Piggies progress

The PC version of Bag Piggies is based on Angry Birds.  You can tell the engines are similar based on the interface and the physics that occur.  The high scores and progress are stored differently, though.  I still don't know where Bad Piggies stores its data.  Angry Birds stores it data in lua files inside of the Windows user's App Data.  As part of my upgrade from Windows XP to Windows 7, I installed a fresh copy of Windows 7, then copied the Angry Birds saved data from the Windows XP VM.  It looks like I have lost all my Bad Piggies data for now.  I do have backups of the XP disks, so if I ever figure it out in the future, I can recover it.