Reading a control record in a subfile -- RPG400-L

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I have a subfile that displays header information in the control record
then repetitive information in the subfile record.  To update this
information a user may update any information in either of the records.
However, if only information in the control record portion is changed, then
I need to read through all of the subfile records and update each of the
correspondng PF records with the changed header information.

I was trying to chain to each record of the subfile using the RRN, then
move the changed fields to the PF fields and do an update.  This does not
seem to be working.  But a READC will not work either because the subfile
records themselves may not have been changed.  I am not sure this makes any
sense in type...but if anyone has any ideas, I'd appreciate it.  I looke
through the archives and could not find anything on reading just the
control record, or reading unchanged subfile records.

Thank you in advance.

Elonna Thompson
CHCS Services, Inc.
Information Technologies
850-432-1700  x2204

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