Primordial Arcanic Pulsar in equiped, but not correctly understood

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I have this Primordial Arcanic Pulsar legendary at rank 3. It is equipped, but both upgrade finder and best in bags act like I don’t have it.

Best in bags wants me to equip it, yet it is already equipped.
Upgrade finder thinks it’s an upgrade, while I already have it.

As for upgrade finder.

When you have an item locked, it always shows it as highlighted, to bring attention to the fact that you have locked it.

The legendary search in the upgrade finder is different than normal upgrade finder searches - you can use that link in your screenshot there to read the forum post explaining it. Think of that as more of an absolute ranking of the effects.

Thank you very much. Sorry for bothering you, and for the late reply.