Reference LoRA preservation weight can erase a marginal gain without reducing base safety errors
Observed 2026-09-07 on ender-inference COR-3791, commit bf9ff74: in a selected-adapter warm-start Reference-LoRA run (rank-8 all-linear, LR 1e-4, one epoch, exact 90-row balanced corrective/rehearsal corpus), raising selected-correct preservation weight from 4 to 8 eliminated fin…