Did a quick test and it appears that the Mobipocket Reader software is extracting the Subject field and using that as the 'Genre'. Did a few mods to some files and it doesn't appear to be storing that in the MBP file. It might help if you could open one of the problem eBooks in the GUI and copy the contents of the output window and paste it here in the forum. Just click in the output window and do Ctrl-A to select all and then Ctrl-C to copy, then paste here.
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