Hi and Welcome !
Must ask you first...
Have you recently updated or fresh installed LimeWire ?
If, "Yes" Click on >
If you've updated LW and can't find your downloads!
If the problem is strictly related to your moving the files using Windows Explorer the above may still be of use to you.
If it is a problem re: LW and the folder changes that have taken place, I am sure the link will help.
btw... If you have not yet turned off your machine, do not do so until you have the solution.