If I get a Pokemon locally or from the GTS, and it was previously trained, does it's EVs reset or stay the same?? Does it's IVs changed ___ \m/o_o\m/
It's ev's will be the same as they were and the same with Iv's. Niether change because they are hidden values. However if you do want to use that pokemon and are not happy with the traded one's ev's/ivs you should breed it for one that is good. Hope this helps :D