PSA: HQ items cannot be restored through item restoration if not discarded

[Alistaire]

That being said, if an item was used properly in the game, then it would not normally be eligible for restoration through the policy. This would include turning in an item for a quest, converting an item into materia, or failed synthesis, among many possible variations of this guideline for the policy. This is in place to prevent abuse of the item restoration policy to try to improve the rewards that can be obtained.

...except the policy explicitly says items converted to materia can be covered.

So is the policy going to be updated to take that line out? If you don't cover it, it's probably a bad idea to specifically say that you do cover it.

Edit: if abuse is actually a concern just require them to drop whatever it converted/desynthed to. It's a one-time thing; it's not going to guarantee they get the wanted result, or even as good a result (unless they got the worst of course), the next time.