Smeagle vs Mankey Mankey uses Low Kick. Smeargle uses Sketch, it learns low kick. Mankey uses Low Kick again and the battle is over. Lets say it was a wifi battle, would Smeargle still know Sketch or Low Kick?
The sketched move returns to sketch after the battle. Source: http://pokemondb.net/pokebase/5102/sketch-in-wi-fi-battle
It depends, if this is a Wifi battle, it'll only last for the battle. If non-wfifi though, it will last permanetely unless Smeargle re-learns Sketch and replaces it with the learned move.
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