I think the dynamic sig is still tied to the old way we categorize items: country, then line.
Now, we're doing the opposite: line, then country.
Under Japan, we still have to move these:
Dark of the Moon (124)
G2 (21)
Generations (22)
Gutto Kuru Figure Collection (4)
Kabaya Gum Plus Series (33)
Movie (2007) (100)
Revenge of the Fallen (136)
Transformers 2010 (5)
K-T Figure Collection (7)
to the top-level categories.
Any chance you only own one figure in those lines I listed above? The Movie (2007) line? If so, that's why you're only seeing one figure for Japan.
As to why you're not seeing the rest of the lines (Cybertron, Super Link, Alternators, etc.), maybe that version of the dynamic sig needs to be updated to reflect the changes as the one I'm using (seen below) is showing the new format.
MIKE
engledogg