Refresh auto-generated keywords?

[xja]

A few versions ago (not sure which), I imported a folder with many recursive subfolders and files. I just realized that a keyword search was not turning up any of the folders that I had imported. When I looked at the keyword lists for those folders, they all had only "new" and "folder" as the keywords and not the folder title. I tried to recreate this with UR 1.2a by importing folders now and found that, while the newly-imported folders did have "new" and "folder" as keywords, they did also have the name of the folder as a keyword (although when I rename the folder, the keyword list still reflects at least one previous name as well). So maybe this issue had something to do with a setting I had or an old bug.

Anyway, is there a way that I can regenerate the auto-gen keywords for all these folders (there are a lot) so they include the title? Synchronizing is not an option (there is no URL attribute).