Aperture export question

I've been using Aperture for just under a year and love it, it's totally redone my workflow to be so much better and more productive. I have run into a question finally that I haven't been able to figure out myself.

I have a series of photos I would like to export into folders according to a metadata field I've set (and need to keep for another part of my workflow). When I export I can set the folders to be anything from times and dates and all sorts of great stuff, but I can't figure out how to make one where I can choose a metadata tag. The one I need is "Special Instructions". I can do it manually, but we're talking about 500-750 photos at a time, and it would be a lot easier if Aperture could make those folders for me.

Any other secret tricks you may know are appreciated too!

Hmm. Never had to do that before. Can you search by the meta data of your criteria, then select all and export into a folder, then repeat for the other data types? Good luck, and if you find a solution be sure to post it here for the rest of us. We appreciate your suffering.

I could do that, but it would be even more work as sorting them manually after, as there are generally only about 5-7 photos per folder.

How about a smart album based on the IPTC data? You can choose the Special Instructions there. Then export the smart folders as Tony-S recommended. Just a thought.