
Originally Posted by
Kaz_LOTB
It's intended that Perfect Immunity prevents beneficial effects from being stolen or removed until / unless Perfect Immunity is removed.
Damage Invulnerability includes the 3 status effects: Physical, Magic, and True Block. Damage Immunity is an innate effect that some characters and talismans have, which grants the same benefits but are not actual status effects. They are considered passive or talisman effects.
-Kaz