"At the beginning of each scenario in the campaign each character is brought back to full health."

"Any equipment expended is not refreshed at the start of the next scenario. Characters may not choose a new pack at the start of a new scenario."

What about equipment not expended but lost when the model is destroyed?

I think that these equipments should be available again if only for balance sake...

If so, what about a grenade that is lost when a model is destroyed and then later used by another model?