The buy loop's pre-emptive shed sold the single it had just bought back for 1 (the buy picks by lineup gain, the shed by piece value). Same-prep buy then sell in co-op 绝境 seeds 21-26: 29 -> 3. Seeds 1-40: solo 绝境 22 -> 24 wins, co-op 9 -> 10 on the 22-match bounty lists; decision time unchanged.