Data Dictionary stripping keys on update

[James Zukowski]

Some of our files are still using external keys. During F/M, the key value may not fill the field, so we are manually padding it to the full length.

With a Data Dictionary definition for the file set up having all discrete Delimited fields, the external key field is specified. If we need to update the file, however, the key value is stripped of trailing spaces in the updated file, even though the data field still retains them.

Is there any way to prevent this?