Okay I posted something similar to this a while ago and tried my hand at ROM editing, but burned out and stopped working on it. Recently I wanted to try something similar, but I don't know if I have all my facts straight.
Short version; my friend and I like to hack pokemon to battle each other with (we never go online with hacked pokemon), and I want to edit the raw stat values of one particular pokemon. For example, I want to create one charizard with an unusually high physical attack, and another charizard with a unusually high special attack. I understand that in PKHaX, one can simply check the "hacked stats" box on the stat screen and change the stats manually. But I notice that the stat values reset after setting the pokemon in a box and viewing it (referring to the above example, I'll set the charizard's physical attack to my liking, set the pokemon into a box, then view it and see the normal charizard attack stat). I read on another post that the hacked stat is still there, only it displays the 'normal' value; is this true? If so, and the hacked stats are still there, is there any way to display the hacked stat properly (via rom-hacks or other means if necessary)? If not, how can I work around this?
Any clarification is helpful!
EDIT: forgot to add, I'm doing this on Omega Ruby and Alpha Sapphire