I dont want to sound supid... where is "Rename History -> Revert" (win7)

hi i have been messing around with fileBot 3.0 on a windows 7 box where my media is located. I am using Xbmcbuntu as my media server connected to my TV.
Ok now the problem.. when I renamed a small directory it dropped all of my file extensions. Ouch!
What happened???????

Cris H.