When leveling in the world of dungeons, if you choose a movement that has a "replacement: XXX", do you need to have the XXX movement?

When leveling in the world of dungeons, if you choose a movement that has a "replacement: XXX", do you need to have the XXX movement?

for example a thief wants to take the "Dirty Fighter" play. Affirms that "replaces: cheap shot". Does the thief need to have taken "Cheap Shot" or can he only choose "Dirty Combat"?