This topic explains how to configure Color Factory to prioritize IPTC tags over XMP ones.
Forcing IPTC prioritization
Where: Channel | Metadata |General tab
In the event that a file contains non-standard IPTC fields and has been opened and re-saved by Photoshop CS2 or CS3, Photoshop will ignore the non-standard IPTC fields when converting the metadata to XMP format. Hence, additional IPTC info not recognized by Photoshop will seemingly disappear from a user’s point of view. Color Factory can be configured to read the IPTC metadata block in the files regardless of the presence of an XMP block and thus retain the contents of the non-standard fields as well.
Enable this option by selecting Force IPTC preference over XMP. This feature can typically be used during the process of moving an existing system over to the newer XMP standard, since at some point there will likely be a mix of IPTC and XMP compliant systems. However, once the transformation to XMP is complete, IPTC tags will be redundant and there will be little need to activate this option.