Well, there are two ways this can be corrected, that I am aware of. One method would require you to change each key frame, animating the neon shape just as you did before, but 25 pixels to the left. That is the only way you could physically change each key frame, especially when dealing with a large amount of key frames, which happen to be close together.
The second method is quite a bit faster, and may work for you. If you were to simply re-set your footage to the position it was in when you originally animated your neon shape, then rendered, and imported it back into the program, you could then off set the footage 25 pixels to the left, and the neon shape would keep its place on the footage. I assume this should work just fine.
Auron wrote:There is a description in the manual on page 37 "adjusting keyframes"... something with holding ctrl but it doesn't work or i misunderstand it
As far as I am aware, this feature is only for setting the origin point of your canvas, and not for re-setting the key frames of effects; although, this feature would be quite handy for scenarios similar to this.