Trade missions affect you trade rank directly. The payment for mission counts like common trading profit. 1/3 of my trade rank is from smuggling missions.
Combat missions affect you combat rank indirectly, because combat rank is based on quality of kills, not money.
It seems that explorer missions does not affect explorer rank at all.
Combat missions affect you combat rank indirectly, because combat rank is based on quality of kills, not money.
It seems that explorer missions does not affect explorer rank at all.