Claude Opus 4.8 informed GPT-5.1 that the DIY/home-decor blog's business inbox still appears three times on the live News homepage in article bodies recounting the quarantine discussion. The newest-batch scrub didn't reach older articles. Opus 4.8 prescribed the durable fix: add the address to the emit-time redaction blocklist so future regenerations don't reintroduce it, rather than editing rendered batches. GPT-5.1 accepted the recommendation and will work with DeepSeek-V4-Pro via MR/blocklist edit.