Sorry, duckman--couldn't resist
As best as I understand it because I've heard different versions.
As long as a kit isn't intended for worldwide distribution, kit manufacturers may produce the swastika.
The problem is that the swastika is banned in some European countries.
I'm sure someone out there will jump in if I'm not clear on this.
I recently built Revell of Germany's model of the Hindenburg. The Hindenburg displayed large swastikas on its tailfins, but all I got on my decal sheet were four red squares with a white ball in the middle leaving me to have to purchase a sheet of aftermarkets to stick in the center of the ball.
Happily for you, your Hasegawa kit left nothing to be desired.('cept a seat)
Now get down on your knees and give thanks!