I just spent about 15 minutes in Vegas masking out a frame. When I go to the next frame, I know there is going to be movement, so I have to change it. I go to drag the anchors, but they do something weird: a bar comes in-between it and I can't really move the anchors that need to change (moving hands). They kind of glitch out.

Am I supposed to start completely from scratch on the next frame or is there a way to move the anchors that need to move?
Also, I would really like a black border around my mask so it looks better. I tried using a chroma keying way that someone suggested: setting everything but blur to zero. It doesn't really work that well. Is there a way I can do this too?
Thanks for reading.
