How to adjust the sprite size automatically after scaling the original sprite sheet?

When I Scale the sprite sheet,for example,2x, the inner sprite border information seems to be disordered.. Is there some way that could adjust the sprite border automatically? Is there some existing tool in unity or need to be programmed manully?

 

Idecided to do it myself. I used "Resources.LoadAll" to loaded the sprites like" object[] objs = Resources.LoadAll("Sprites/mapple") ",but when I modify the infomation like "width" ,"height","center" of those separate sprites, how can I re-write the information into the Assets, may be the "meta" file,I guess...