Board Thread:General Discussion/@comment-36643067-20181030154400/@comment-35175794-20181030160012

Since each player chooses their own path in the game, I don't think there is a certain order for quest and collection items.

That being said if you never completed a collection and you are just now doing the quest I would think that you should just be able to do the quest and receive the needed items for the collection.

If you have completed the collection you do not need to complete it again to finish the quest.