Problems faced while extracting multiple files to a same directory

When multiple files are extracted to a directory, they are assigned a prefix number followed by the original file name. the number is the internal id. I find that the internal id for the same file in the same image varies when the case is opened in different machines. The evidence should be identified. So while exporting the file list to a CSV file the internal id can be added so that the file path of any specific file extracted can be easily understood.