regarding to what shiny code you use....wild shiny does not affect anything......but maybe the marking code, if it is not an egg or first evolution....because just the skin for you will be changed in the P-dex it will still be normal.....but with an egg you might have an legal one to obtain....well just try it out with the marked ones.....but i think more that the ev/Iv and SID thing is important, because unreal numbers there seem to hang up the whole GTS part ( had this with my Pearl and a Psaved poke....now i catch them all or breed them!)