Using bitmaps.... then they mess up?

K im using sprites from video games in the game i’m making. All my sprites are on bmp that has a has a clear background.

so i’ve imported the pic in and i just stuff ( pics, bg’s ) whenever i need it.
anywayz sometimes when i copy and paste something.

anywayz when i copy stuff and usually modifi it abit like flip horizontal the image messes up and shows a pic from some other part of the bitmap…

its really getting me angry… any help "?