Although the mod settings for Angle/Radius work fine for the Planet Arig when installed, if the mod Atomic Arig is installed then the planet Arig will not move to its default location specified for Arig by Better Planets, nor will it move if you specify an Angle/Radius. Atomic Arig will simply refuse to move from its vanilla spot in the Southeast of the Solar System.
I've verified that "Use Custom Parameters from Settings" is enabled. Again, works fine for normal Arig but not for Atomic Arig.
Not sure if there's anything you can do to fix this as it may be an issue that has to be resolved on the side of the creator of Atomic Arig.
Also: through some testing with Atomic Arig I've noticed that the route between Vulcanus and Arig always remains 25km no matter how far away Vulcanus is. Perhaps something related to this is causing the issue?