Ok, I just found out about the Mew glitch recently so used it, and got Mew in Red. My main game is in Pokemon Gold, I was wondering, will there be any mess ups if I transfer Mew into gold? I'm asking this because I know that the Missingno glitch really can mess up your game in gen 1. Will there be any problems if you transfer Mew to gen 2?
Also, might as well ask this here, I was wondering about when the rival appears in gold, after meeting him at mt moon, when you are about to go into the kleague, I was wondering, if you throw him the match, will he be in the league waiting for you from then on? or will he just go to the dragon cave like he does if you win?