The easiest thing to do in this case since it is only one task is to simply recreate the task in Publisher. If you are unsure of how you did it, refer to the backup workorder you generated the day you made the task. It should be here:C:\Documents and Settings\All Users\Application Data\QlikTech\DistributionService\1\BAK\__your task date__
Open it up and find your task. There you will see your original settings etc., then just remake the task in Publisher.