Polishing with Novus (or working with a scratch in plastic in general)

[mike boss]

I picked up these doors from Home Depot (Canada) for my front closet.

http://www.homedepot.ca/product/60-inch-espresso-framed-frosted-sliding-door/813104

Just got them installed and noticed a fine scratch on one of the panels.
The scratch is to high for my kid or dog to have done it, and I'm confident nobody
hit the door with any kind of metal or sharp object.

Anyway I am waiting to see what the manufactuer is going to do. They have asked that we send in a photo. Your only able to see the sratch in certain light conditions.

Anyway should they decline to fix I'll try my hand at polishing out the scatch with Novus.
The panel is big as you can see from the image. If I work on only the scratched area will you be able to tell using Novus ? Or do I need to work on the entire panel ?

I've only used Novus when doing work on a marquee, so you treat the entire area. My issue here is say I treat a 4" circumference area. Will you be able to tell as the mild abrasive will have altered the look of that entire area.

http://www.homedepot.ca/product/60-inch-espresso-framed-frosted-sliding-door/813104

Any help/advice would help. I hate LOOKING at this damage