Healing sleep doesn't heal shadowdrain.

Uknown shadow attacked me in the imperials lands, not in graveyard. After i hit it once it disappeared but left me with affect of shadow drain. It cannot be healed by healing sleep. indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> af You are affected by: Commune: 'bless' modifies save vs spell by -14 for 63 hours. Commune: 'bless' modifies hit roll by 7 for 63 hours. Spell: 'detect invis' for 34 hours. Spell: 'detect magic' for 30 hours. Commune: 'armor' modifies armor class by -20 for 21 hours. Spell: 'bloodlust of the twelve fiends' modifies damage roll by 5 for 10 hours. Spell: 'bloodlust of the twelve fiends' modifies strength by 5 for 10 hours. Power: 'power of the damned' for 9 hours. Spell: 'protection from good' for 2 hours. Commune: 'healing sleep' for 0 hours. Skill: 'shadowdrain' modifies moves by -22 for -1 hours. Skill: 'shadowdrain' modifies mana by -22 for -1 hours. Skill: 'shadowdrain' modifies hp by -22 for -1 hours. Spell: 'pass door' for -1 hours. indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> who g *51 D-Elf A-P* (PK) [EMPIRE] Keilheil the Fist of Darkness, Imperial Dread Lord [51 Duerg War] (PK) Garagrath Grimhammer the Legend of the Battlefield Players found: 2 indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> who [15 Human Con] Rajad the Magus *51 D-Elf A-P* (PK) [EMPIRE] Keilheil the Fist of Darkness, Imperial Dread Lord [51 Duerg War] (PK) Garagrath Grimhammer the Legend of the Battlefield [32 Gnome Shf] Neddo the Master of Speed [35 D-Elf Hea] [EMPIRE] Zirgil the Minister of Life, Imperial Acolyte Players found: 5 indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> sk learn evade You focus your bonus learning on evade. indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> who [15 Human Con] Rajad the Magus *51 D-Elf A-P* (PK) [EMPIRE] Keilheil the Fist of Darkness, Imperial Dread Lord [51 Duerg War] (PK) Garagrath Grimhammer the Legend of the Battlefield [32 Gnome Shf] Neddo the Master of Speed [35 D-Elf Hea] [EMPIRE] Zirgil the Minister of Life, Imperial Acolyte Players found: 5 indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> who [15 Human Con] Rajad the Magus *51 D-Elf A-P* (PK) [EMPIRE] Keilheil the Fist of Darkness, Imperial Dread Lord [51 Duerg War] (PK) Garagrath Grimhammer the Legend of the Battlefield [32 Gnome Shf] Neddo the Master of Speed [35 D-Elf Hea] [EMPIRE] Zirgil the Minister of Life, Imperial Acolyte Players found: 5 indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> gr Keilheil's group: [ NPC *] a giant mercenary 100% hp 100% mana 100% mv 0 xp [51 A-P] Keilheil 100% hp 49% mana 100% mv 562842 xp indoor civilized <<<100%Hp>>> 49%Ma <100%Mv> 20458tnl 6 AM> #Command file written. You awake feeling fully refreshed. You awaken, cured of all ailments and fully refreshed. indoor civilized <<<100%Hp>>> 100%Ma <100%Mv> 20458tnl 7 AM> sta You are already standing. indoor civilized <<<100%Hp>>> 100%Ma <100%Mv> 20458tnl 7 AM> af You are affected by: Commune: 'bless' modifies save vs spell by -14 for 62 hours. Commune: 'bless' modifies hit roll by 7 for 62 hours. Spell: 'detect invis' for 33 hours. Spell: 'detect magic' for 29 hours. Commune: 'armor' modifies armor class by -20 for 20 hours. Spell: 'bloodlust of the twelve fiends' modifies damage roll by 5 for 9 hours. Spell: 'bloodlust of the twelve fiends' modifies strength by 5 for 9 hours. Power: 'power of the damned' for 8 hours. Spell: 'protection from good' for 1 hours. Skill: 'shadowdrain' modifies moves by -22 for -1 hours. Skill: 'shadowdrain' modifies mana by -22 for -1 hours. Skill: 'shadowdrain' modifies hp by -22 for -1 hours. Spell: 'pass door' for -1 hours.