First .. when sending these to support, it truly helps if you send the full log file associated to your issue hopefully with DEBUG mode set for job logging. (Defined under the Project Level in the Control Tab)
Second .. I took a copy of this project, and created a table on my iSeries that matches the same you have here. Having it read the table and loop through the file names retrieved, it prints the Source FileName correctly, thus finding it for whatever task is necessary (as in FTP, etc).
Please send us your JobLog (in debug mode) so that we can get a further definition of what the issue is and we will reivew.