Quick question on an icon, moon glaive BTN/PASBTN

[Inflicted]

I know the default icon is:
ReplaceableTextures\PassiveButtons\PASBTNUpgradeMoonGlaive.blp
for the Passive ability.

I recall there was a research/upgrade or something that had the deault BTN (non-passive) icon, does anybody know the link?
It might be a hidden icon, idk.
Anybody know?

 

[KaerfNomekop]

ReplaceableTextures\CommandButtons\BTNUpgradeMoonGlaive.blp

Upgrade Moon Glaive, under Upgrades.

 

[Inflicted]

Thanks.