Thank you for this guide. I have a query - I recently returned to the game after playing 1.0 and 2.0. I've unlocked both Heavensward and the latest expansion, but I'm finding that I can only desynthesise items that belong to the original game, nothing from either expansion. [The item descriptions say they are desynthesisable, and they come up in the desynthesis dialogue box, but a big red message of "This item cannot be desynthesized" is shown at the item screen (for everything not in the original game)].

Have I missed a second set of quests to unlock the Heavensward items?