Filtering by hierarchical keywords
I have been using hierarchical keywords in Lightroom, and I now want to filter my photos using the upper level of the hierarchy. For example, I have the following tags:
rocks
sedimentary
sandstone
etc...
igneous
...
metamorphic
...
This works great for adding keywords, as I can simply type in "sandstone" and "sedimentary" and "rocks" automatically get added. However, when it comes to searching my photos, I'm stuck. I want to view all my photos of rocks, but filtering by the keyword "rocks" turns up no photos (perhaps because the other keywords only get properly added on export). Is there an easy way to select all photos with any keywords within a particular hierarchy?
