Yesterday, I synced several TV shows to ATV. This morning, I was going to add an additional show and removed the shows I'd done yesterday from the sync request. I have just noticed that the shows I unselected are no longer on ATV. Are they synced constantly? If someone would please explain the protocol for me, I'd appreciate it.
I think it works like the iPod: the ATV content is determined by what is selected in the iTunes menu. When you remove something from the selection, it's removed from the ATV. (In fact, that's probably the only way to get something off without removing it from iTunes altogether.)