correcting IPTC data

[tnfoto]

I'm having trouble correcting a mistake in the IPTC stationary pad.  I selected all the files, cleared the bad caption and replaced it with the correct info but it seems to just add the new info to the old info so I now have 2 captions - a bad one followed by a good one - in all the files.  I tried just clearing it & applying and it doesn't change anything - like it's again adding the new info (in this case nothing) to the old but not deleting the old info. 
Any suggestions?
Thanks!

[Kirk Baker]

I'm having trouble correcting a mistake in the IPTC stationary pad.  I selected all the files, cleared the bad caption and replaced it with the correct info but it seems to just add the new info to the old info so I now have 2 captions - a bad one followed by a good one - in all the files.  I tried just clearing it & applying and it doesn't change anything - like it's again adding the new info (in this case nothing) to the old but not deleting the old info. 
Any suggestions?

I'd suspect that you have the Append checkbox set.  It's the one with the '+' over the top of it.  Uncheck that and you should be able to wipe out your old caption with the new one.

-Kirk

[tnfoto]

That does it.  Thanks!  I knew it had to be too simple to notice.