Sword, remember when they changed the items on guild quests and people had to abandon the quest and start over if the quest required a removed item?

The Relic Reborn quest won't be the same for those who start after 2.0. However, they're making it so that even if they remove certain content, our quest that we started before 2.0 will not change to the point where we have to abandon it and start over.

However, if you abandon the quest and start over after 2.0, your quest won't be the same. Same as when after you complete the 1.0 quest and start it again after 2.0.