[Black 2 hackrom] Problem with trainer Level.

[LullalyMcKnightle]

Hi, sorry in advance if my english is bad. (and sorry if it's not the right place to ask this)

I've been working on a hackrom of Black2 for a few weeks now and I found a really annoying bug that I can't find a fix for.
I've already had to restart once my project because of it and I really don't want to again.

I've been using Frost's Ultimate Gen5 Editor and it was all good, everything was working but one of my trainer does not work.

This is what this trainer's first Pokemon looks like. I've changed their Pokemons, Level, AI, Move and Item.

But when I try to fight her in my game, this is what it looks like:

Their Donphan ends up being level 5 and same for every other Pokemon, they are lowered to level 1 or 6.

Is there any way to fix it ?
None of my other trainer is bugged (as far as I know) and I really don't want to have a trainer with a team full of Level 1 on a route so close to Victory Road.
I didn't have any error pop-up when doing this trainer either.
I've also tried to check with BWTE for Black 2 to see if I could find a problem but found nothing. The level are correct on the editor, just not in the game.

Thanks a lot in advance for your help !

Edited June 16 by LullalyMcKnightle