diff --git a/dressup-generate.test.js b/dressup-generate.test.js
index 26a2cb1..b429dff 100644
--- a/dressup-generate.test.js
+++ b/dressup-generate.test.js
@@ -187,6 +187,12 @@ test("generate: full happy path lands a clip with character/garment/dance-ref tr
   assert.equal(clip.garmentId, garment.id);
   assert.equal(clip.refDanceVideoId, danceRef.id);
   assert.equal(clip.channel, "dance");
+  // ingest.js's syncLibrary() only carries a library entry forward as-is
+  // when `edited` is true; otherwise its periodic auto-sync (every 5 min,
+  // server.js) rebuilds the record from the raw H3 job and silently drops
+  // channel/characterId/garmentId/refDanceVideoId — breaking both the M.7
+  // dedupe cache and pickNextClip()'s dance-channel exclusion.
+  assert.equal(clip.edited, true, "dance clip must be edited:true or the next library sync wipes its traceability fields");
 
   // T10's admin.html traceability column joins clip.characterId/garmentId/
   // refDanceVideoId back against the three admin lists to show "谁的脸 +
diff --git a/server.js b/server.js
index 96ac41f..fea8b34 100644
--- a/server.js
+++ b/server.js
@@ -779,6 +779,13 @@ async function generateDanceVideo(job, opts = {}) {
         const clip = {
           id: polled.id,
           source: "h3console",
+          // ingest.js's syncLibrary() only carries an entry forward as-is
+          // when `edited` is true — otherwise it rebuilds the record from
+          // the raw H3 job on its next periodic sync, which knows nothing
+          // about channel/characterId/garmentId/refDanceVideoId and would
+          // silently strip them (and leak this clip into the non-dance
+          // pickNextClip() pool, since `channel` would be gone too).
+          edited: true,
           channel: "dance",
           characterId: job.characterId,
           garmentId: job.garmentId,