When a backup set is created, the BackupSet.properties file is normally created in the specified destination location's Track-It! Backup 2012xxxxxxxxxx folder. Then when restoring the backup set, you want to make sure the restore batch file points to that same folder's contents.
For example, on the original server the backup batch could be:
After the backup is created, you'll have the following type of structure (the BackupSet.properties file is created in the root of this location):
C:\Backups\Track-It! Backup 20120507103000
After the backup is created you would want to copy the entire Backups directory and all of its contents to the new server and then make sure the restore batch file points to it. For example:
SET BackupSetLocation=C:\Backups\Track-It! Backup 20120507103000
If your backup set for some reason doesn't contain the BackupSet.properties file, you'll need to run the backup again. The restore won't work properly without it.