The registry indices of the three keys, resolved once for a loop over many hits.
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The registry indices of the three keys, resolved once for a loop over many hits.
A meta value looked up by name takes the registry lock on every call; the exporters walk millions of hits, so they resolve the indices once per table and look up by index. A key that no hit in this process has used yet resolves to UInt(-1), which the index overloads treat as "absent". Construct it right before the loop, not statically: the keys become registered the moment a workflow annotates its first hit.