You could try to Rehash the files, but I don’t think that will work.
Basically, deleted files are still on your harddrive, just the path to the data is erased. There is quite a few data recovery programs that could recover the data for you, but this is not something for a novice to attempt.
If you want to do this, “ontrack easy recovery professional” is one of the best (in my opinion).
However, to do this properly, you can not recover files from the same partition that your operating system is using. For most people this means removing the hard drive, and installing it in another computer. If your files are saved to a different harddrive or partition, then that is not a problem.
Also, everytime you use your computer, more and more of the data could be lost.
Regarding “rehash”, when you enabled the files again, a new “placeholder” file was created, and its not likely that it will select the exact same sectors of the hard drive to save the data, so this is a longshot.
Another option is a bootable cdrom recovery program. There are some of these about, infact I have a couple I downloaded, but never tried one. This would be the only way to recover files from your C drive without booting from it.
If you are successful in recovering the files, please post the procedure you used in our guides and how to section, as we get others that do this from time to time.
Concerning adding an “undelete” to our client, it would be nice, but our developers are quite busy working on the new client, so I don’t think this will be a priority.
I will however suggest a WARNING screen when files are disabled, as this should stop people from deleting files like this.
Suspect
ps. keep in mind that selecting files within a torrent is not a perfect science, and adding files to be downloaded sometimes will make complete files change to incomplete (if they share pieces).