[cthulhu]

In theory I think that resurrections that take place on the battlefield (phoenix pyre, elixir of immortality, shape-change-on-death) should preserve items unless they involve losing the slots the items occupied, while resurrections that take place off of the battlefield (immortality, call god, etc) should always reset the character to default equipment.

In practice I occasionally see items lost mid-battle on seraphs & chayots using elixirs of immortality and (in the case of the seraphs) casting phoenix pyre that I can not attribute to any cause that I know of.