Adjacent futures months (e.g. 6EK vs 6EM) have nearly identical prices, so the first-match-within-tolerance approach picked the front month (6EK/May) instead of the actual active contract (6EM/June). Now picks the candidate with the closest price to the continuous contract instead of breaking on the first match within 0.1% tolerance. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>