I think I reported this before but cannot remember when and where. In short, I’d like to request update on kerning.plist in UFO.
When I talked about this last time, I said that the ones that would be renamed in UFO (typically Cyrillic) would lose their kerning pairs. In the following update, the groups.plist was taken care of (thanks Georg) but kerning.plist wasn’t, which I haven’t noticed until now. This results in the loss of pairs of glyphs that don’t belong to any kerning group.