ep3_become_landed_save_liege_effect

ep3_become_landed_save_liege_effect = {
	$TITLE_GIVER$ = { save_scope_as = ruler }
	save_scope_value_as = {
		name = override_independence_logic
		value = $ALWAYS_INDEPENDENT$
	}
	if = {
		limit = { scope:override_independence_logic = yes }
		# Do nothing, we're just here to block subsequent checks.
	}
	else_if = {
		limit = {
			scope:ruler = { top_liege != this }
			any_in_list = {
				list = $TITLE_LIST$
				tier = scope:ruler.highest_held_title_tier
			}
			NOT = {
				any_in_list = {
					list = $TITLE_LIST$
					tier > scope:ruler.highest_held_title_tier
				}
			}
		}
		scope:ruler.liege = { save_scope_as = new_liege }
	}
	else_if = {
		limit = {
			NOT = {
				any_in_list = {
					list = $TITLE_LIST$
					tier >= scope:ruler.highest_held_title_tier
				}
			}
		}
		scope:ruler = { save_scope_as = new_liege }
	}
	scope:new_liege.government_type ?= {
		save_scope_as = old_government
	}
}

As written in game/common/scripted_effects/07_dlc_ep3_scripted_effects.txt.