global options are always present.. the planet specific options add onto the global options.
I mentioned way back in the day that there should be single planet suppression options available, but people wanted single planet build instead *shrug*
edit
for usefulness, i usually run as such:
global:
1 mk1 engineer
1 rebuilder
planet specific:
2-4 mk1
1-5 mk2
2-10 rebuilders
generally, i only planet specific stuff for construction worlds, my homeworld, or border worlds.