How would trading eggs affect the shiny rate that the masuda method gives in Gen 6?

Question

(Helpful info that might help regarding the understanding of my question)
So i've just gotten confirmed that the reason a Pokemon is shiny in gen 6 is because if a Pokemon's secret ID matches the trainers ID it will be a shiny. So, if I breed and hatch a shiny Pokemon, if I soft reset that egg in that game, it will always be shiny. But, if I send over that Egg to X for example, and hatch the Egg, it won't be shiny since it's secret ID doesn't match the trainer ID.
(Question)
So now i'm wondering what if I masuda method breed in Y, but trade the Eggs to X to hatch, would that cancel out the shiny rate that the masuda method applies? Because wouldn't the shiny rate from my Pokemon Y game only affect a higher rate to roll a Pokemon with the secret ID to match the trainer ID in Y? Or does it still have the increased shiny rate even though the Eggs were traded to X with a different trainer ID?
(Why)
(The reason i'm doing this is because I want a shiny Pansear in X at the very start of the game with me being the OT. I had full odds shiny hunted in Santalune Forest for a month and hadn't found a shiny Pansear yet and was looking for other easier ways to get one.)

Answer 1

Masuda Method won’t work if you trade the eggs over to another game because, as you guessed, MM only tries to find a shiny for the game it’s bred in. In fact, using MM and then trading the egg over would make your shiny odds worse than the standard 1/4096. The best way to get a shiny Pokémon by breeding and then trading is to not use the Masuda Method, then trade every egg you get and hatch them in X until you get a full-odds shiny.

EDIT: should probably add that the Shiny Charm also worsens your odds if you trade the egg.