Two Identical Trinkets

In WOTLK the best in bag feature want me to equip two identical trinkets but I have only one and only one is available since its a quest reward.

Snapshot: d8d0054083bb4a3ead948db2ebc8baa0

It is the holy spec trinkets.

It still want to equip that trinket even if its not in my bags any more:

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