Guilford + Neutral troops after fight

[Youpiya]

Hello,

I hardly play these times but I want to know if I have to use an old save instead of the current one.
After the fight of prince Guilford, he uses armageddon and a few troops died.

First question : does it count as a loss at the end ? because I made a no loss fight, but anyway once every enemy is dead he uses the armageddon... So do I have to restart the combat with an ice prison on each of my unit ? (I want a total no loss)

Second question : just after the fight I am in arlania with elves troops that are ennemies. Once I talk to Rezo, the become neutral. Will they come enemies again ? because it is a lot of xp lost if they stay neutral !!!

Tx a lot for your answers !