diff --git a/STATE.md b/STATE.md
index 03d725d..0948c07 100644
--- a/STATE.md
+++ b/STATE.md
@@ -40,3 +40,4 @@
 - [2026-03-15] No generic flag dispatch: only `token_value_inflation` is ever zero-rated (#723)
 - [2026-03-15] `llm`-origin entries in manifest have null fitness and no evaluation path (#724): evaluate-seeds.sh scores null-fitness seeds and writes results back to manifest.jsonl
 - [2026-03-15] manifest.jsonl schema has no canonical machine-readable definition (#720)
+- [2026-03-15] CID format change silently drops historical generation JSONL on re-admission (#757): warn on unrecognised CID format instead of silently skipping
diff --git a/tools/push3-evolution/evolve.sh b/tools/push3-evolution/evolve.sh
index fcd9236..436dd61 100755
--- a/tools/push3-evolution/evolve.sh
+++ b/tools/push3-evolution/evolve.sh
@@ -812,8 +812,11 @@ for fname in sorted(os.listdir(output_dir)):
                 fitness = int(d.get('fitness', 0))
                 if fitness < threshold:
                     continue
-                # cid format: "candidate_XXX" (gen_idx derived from enclosing filename)
+                # Canonical CID format is "candidate_XXX" (zero-padded numeric suffix,
+                # e.g. "candidate_001"); gen_idx is derived from the enclosing filename.
+                # Old runs 1–6 used "gen{N}_c{MMM}" — see manifest.jsonl schema (#720).
                 if not cid.startswith('candidate_'):
+                    print(f'WARNING: skipping unrecognised CID format {cid!r} in {fname}')
                     continue
                 cand_str  = cid[len('candidate_'):]      # numeric suffix, e.g. "001"
                 push3_path = os.path.join(