This seems like an extremely strong application/tool, but I'm having a problem reading the information and finding the solution to my needs. I'm sure it's there, but I could really use the help. Thank in advance for any guidance.

I have 100k+ images, all my keywords, captions, copyright etc, are in Filemaker, I can export them as csv files (rename/reorder fields if necessary, etc), but I want to write the info to the IPTC fields in the JPGS so that I can use Lightroom or Aperature - so how do I write/copy the data from the exported file to jpgs?

I would prefer to export the data on per directory basis (to keep the number of files to a few thousand at a time) rather than have to export individual data for each file/image.

Any thoughts on how to do this efficiently is greatly appreciated.