Can the dawn of war expansion pack soulstorm unlock the imperial guard and races from the other expansion packs without the other expansions

For example if you purchase soulstorm by itself through steam. You may go to skirmish and play ANY race you wish, however, when you click on multiplayer the races to choose between are limited to: Dark Eldar && Sisters of Battle.


If you purchase the other expansions plus the original copy then you can play all races (room for error). This is a major buzz kill because the game is fun.