Nostalrius Begins - Quality wow vanilla realm (1.12)

As they are a Quest Reward and the quest had been completed, will the items be restored by a GM once the questchain is fixed?

I mean, as it's a quest, you won't be able to do it again, right? The Nature Res Pants would be required for some AQ progress.

When all is said and done, players will be able to complete the quest properly, even if you have done it before. On the same note, those players who have completed the quest "A Terrible Purpose" will be able to complete it again in order to receive the Nature's Whisper necklace which was previously unavailable.