What happens if I do a swap with a shiny pokemon? Do I get a shiny back or will it be normal?

Both can happen. But most likely a normal, so I don't recommend switching again.

lol, when you random swap, you have very very less chances of getting a shiny. so, if you swap a shiny pokemon by mistake, you will get a normal pokemon. if you get a shiny again, take a screenshot. it will prove you got 2 shinies back to back. because, your older pokemon will still show in your first slot in your team at top, and new swapped shiny will be shown too, so that will prove that you got two shinies back to back.

most likely you will get a normal poke which kinda stinks but if your lucky you could get a better shiny

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Ok well thanks for the help!

if you got a shiny do not random swap it find anothe pokemon in map and use it the random swap

There is a chance that the pokemon will be shiny, but it's pretty low, so I wouldn't try it.

Its 1/50 to get a shiny so it will be a normal.