If your in one of the lvl1 reset dungeons ...

[firerula]

if say your pokemon is lvl 25 if in the dungeon if you like get to 99 and the pokemon from lvl 1 gets to like lvl 30 will it stay like that?

 

[Pok'emon Master]

No it will return to normal

 

[Eclipsed soul]

No it will return to normal

That's not very nice :/

But yeah, if your above the level you were when you entered, you'll be the new high level. If you were higher when you entered, you'll just be the same level you were before you entered :3