I got a Master Writ to create a purple Superb Glyph of weapon damage. I created a Superb Glyph with Weapon Damage it effect, but the quest did not progress. This is probably because the glyph with Weapon Damage as its effect is actually called "Superb Glyph of Increase Physical Harm." There is no "Superb Glyph of Weapon Damage."
The writ needs to be corrected so that its glyph is one that exists.
"A probable impossibility is preferable to an improbable possibility." - Aristotle