If a Pokemon with pressure mega evolves or loses the ability, will the effect still be there?

Question

Pretty self explanitory. One thing tho. If I attacked it just when it mega evolved, so it megas then I attack, would pressure drop it? Or in like Gen 6 when speed didn't change till next turn, would the ability be like that where the first time I attack(in gen 6) after they mega I get the drop, but not later?(sorry if this is confusing)

Comments

https://pokemondb.net/pokebase/268204/how-do-abilities-work-on-the-turn-you-mega-evolve
Does this help?
Since it doesn't affect turn order, it should only be in affect if the Mega Evolved Pokémon has it.

Answer 1

The effects of Pressure go away once mega evolved.

Replay

Hope this helps! :)

Comments

Thanks to both of you but sorry snom, yours was a bit vague, so I'll  ba y's

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No problem! :)

Answer 2

Generation V onward
Pressure now only affects opponents. Wild Pokémon are more likely to call for help when facing a Pokémon with Pressure. It shares this effect with Intimidate and Unnerve

Since Bulbapedia says nothing about Generation 6 or mega evolution, the effect wears off

Source: https://bulbapedia.bulbagarden.net/wiki/Pressure_(Ability)#Generation_V_onward

Hope this helps :)