Awakened Added Fire Damage Support + Archdemon Crown + Runegraft of Gemcraft

6 lvl Awakened Added Fire Damage Support
not deal "+1 Level from support" in Archdemon Crown
Although it 5 (6-2+1 from Runegraft of Gemcraft)

in another equipment slot it adds this bonus

Item Class: Support Gems
Rarity: Gem
Awakened Added Fire Damage Support
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Fire, Physical, Support
Level: 6 (Max)
Cost & Reservation Multiplier: 120%
Quality: +20% (augmented)
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Requirements:
Level: 82
Str: 129
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Supports any skill that hits enemies.
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Supported Skills deal 10% increased Fire Damage
Supported Skills gain 45% of Physical Damage as Extra Fire Damage
+1 to Level of Supported Physical Skill Gems
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This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
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Corrupted

Item Class: Helmets
Rarity: Rare
Corpse Ward
Archdemon Crown
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Quality: +20% (augmented)
Armour: 323 (augmented)
Energy Shield: 67 (augmented)
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Requirements:
Level: 75
Str: 79
Int: 114
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Sockets: B-B-B-R
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Item Level: 84
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-2 to Level of Socketed Support Gems (implicit)
+2 to Level of Socketed Skill Gems (implicit)
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Socketed Gems are Supported by Level 16 Hypothermia
Socketed Gems deal 30% more Damage while on Low Life
Socketed Spells have +3% to Critical Strike Chance
32% increased Armour and Energy Shield
+141 to maximum Life
12% increased Stun and Block Recovery
8% increased Effect of Cold Ailments
+1 to Level of Socketed AoE Gems (crafted)
10% increased Area of Effect (crafted)
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Split
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Shaper Item

I have the same issue with Divine Ire supported by Awakened added fire level 3 and a +3+3 Venarius' astrolabe.

It makes AAFS level 6 but the +1 to physical skills doesnt apply to Divine Ire.