Personally I try to use Copy To or Move To whenever possible for these very reasons.
They have to be on the computer somewhere. Searches are not always perfect. Try with less specific names. If you are searching with Bridge it probably will not pick them up as they are not indexed.
I selected the photo in bridge and then used a drag and drop method to move it. It all went well except in two instances.
I always use the drag and drop method and if it goes wrong I usually are to fast and don't wait for Bridge to have completed or I did not point to the correct folder.
Without knowing what system you are on and what version of bridge you are using I agree with Curt that the files must be somewhere on your system (also check the Bin) and you better use a dedicated system search for it.
And what is "group.it"? If I do a google search it stops without result and group.it also has not understandable or related results?