I am afraid that I am missing something. I have found how to export the IPTC data from image files to text files (this is helpful to add records to my custom database), but how do I do the reverse?
I am about to start a workflow where I outsource some of my keywording. The keyworder sends me text files (of the same names as my image files) that I then batch merge with my image files. I have been looking for software that can do this, and ImageInfoToolkit is the only one I have found so far. But I prefer Photo Mechanic for many other reasons and I would rather buy it (and standardize on it) if possible.