Well, because of what Ganja said... I can't change UI texture addresses.
It's a huge file... I couldn't find any guide about L2Font-e editing on H5, that would more or less work on the same way and check if I'm doing anything wrong.
Is it possible to reimport all files maintaining it's properties? For instance, if I export them with umodel, if I simply import them to Unreal, won't it change? Because on importationg settings, I must set up a compression (DXT), and it goes to all of them at once..