That achievement is a Forsaken achievement, thus only the Forsaken-released Seals/Titles will trigger its completion.
[url]https://www.bungie.net/en/Help/Article/48484[/url]
[quote]The Seal the Deal Achievement/Trophy will only unlock if a player owns Forsaken and one of the following Forsaken seals is earned:
Wayfarer
Dredgen
Unbroken
Chronicler
Cursebreaker
Rivensbane[/quote]