Berserk's & Fire Arrow's damage type modification

[Tommi]

I have been wondering how skills, such as Berserk and Fire Arrow, which modify the basic weapon damage from physical to another damage type (e.g. magical), exactly work. The questions I have in my mind:
- Do they modify all physical damage on the attack, or just the weapon damage?
- So, do the stat bonuses get also modified to another damage type?
- How about if I have a Might aura on my character? Does the damage it adds get modified to non-physical, too?

Thanks in advance,

Tommi