Deleting movies on iPhone doesn't work

[mactigger]

After watching a movie or videocast etc on my iPhone it asks if I want to delete it. I say yes and then it confirms. The problem is when I go to sync it puts the movie back on the iPhone. Shouldn't it DELETE the movie from the computer? That is my idea of sync'ing

 

[Ryukyu]

Do you still have it checked on in the iTunes interface?
If so, that's why it puts it on.
If not, then I don't know what's going on.