I know for a fact that this has been discussed before, but I'm too lazy to go look it up.
How do you deal with the evolution of Pokemon that are only supposed to evolve when traded?
Some people just stick with canon, and it makes sense in the story for the Pokemon to be traded, but I have no real intention of doing any trades in my fic. I've toyed with two ideas: having the two Pokemon in question swap trainers temporarily because the situation forces it and evolving during the action (which would be a little too coincidental for my taste), or just having them both evolve out of scene (which would be lame). I guess I could also just have them evolve through experience and ignore the whole trading thing, but I feel like there's a better solution.