diff --git a/internal/inventory/chain_builds.go b/internal/inventory/chain_builds.go
index 459ec109..c6db6b75 100644
--- a/internal/inventory/chain_builds.go
+++ b/internal/inventory/chain_builds.go
@@ -1206,6 +1206,28 @@ func (i *Inventory) layoutBuilds(ctx context.Context, c *chain.Chain, say func(s
 		if r.Records%1000 == 0 {
 			say("laying the builds out: %d of %d records, %d keys written so far", r.Records, len(ids), r.Written)
 		}
+		// A record already under its new key is moved: a run again (the start before this one laid it out) neither reads its
+		// manifest nor writes it, and **no pointer is set back**: they are only made where missing.
+		own := chain.BuildKey(rec.Module, rec.ID)
+		if rec.State == chain.BuildAsked {
+			own = chain.RequestKey(rec.ID)
+		}
+		if _, there, err := c.Builds.GetRaw(ctx, own); err != nil {
+			return r, err
+		} else if there {
+			r.Present++
+			if rec.State != chain.BuildAsked {
+				if wrote, err := i.pointTo(ctx, c, chain.IDKey(rec.ID), idPointer(rec.Module), false); err != nil {
+					return r, err
+				} else if wrote {
+					r.Written++
+				}
+			}
+			if rec.State != chain.BuildAsked && rec.Module != "" {
+				byModule[rec.Module] = append(byModule[rec.Module], rec)
+			}
+			continue
+		}
 		// A manifest already written in this run is not written again.
 		digest := ""
 		if body := manifestBytes([]byte(rec.Manifest)); body != nil && c.Kept {
@@ -1265,7 +1287,7 @@ func (i *Inventory) layoutBuilds(ctx context.Context, c *chain.Chain, say func(s
 			return r, err
 		}
 		for _, p := range points {
-			wrote, err := i.pointTo(ctx, c, p.key, p.value, true)
+			wrote, err := i.pointTo(ctx, c, p.key, p.value, false)
 			if err != nil {
 				return r, err
 			}
diff --git a/internal/inventory/chain_builds_layout_test.go b/internal/inventory/chain_builds_layout_test.go
index b1442c0e..26e30f3a 100644
--- a/internal/inventory/chain_builds_layout_test.go
+++ b/internal/inventory/chain_builds_layout_test.go
@@ -426,3 +426,36 @@ func TestTheChainIsRefusedUntilTheBuildsAreLaidOutAndTheLayoutIsDoneOnce(t *test
 		t.Fatalf("the second layout changed the bucket: %v", err)
 	}
 }
+
+// A layout run again — the live start recorded the first in chain_moved, not in the marker — never sets a pointer back to an
+// older build, and does not read a manifest of a record already under its new key.
+func TestALayoutRunAgainLeavesThePointersOfTheBuildsMadeSince(t *testing.T) {
+	counting := &readCounting{Backend: chain.NewMemory()}
+	inv, c := layoutChain(counting)
+	ctx := context.Background()
+	for n := 1; n <= 2; n++ {
+		old := legacyBuild(n, "alpha", fmt.Sprintf("c%d", n))
+		if _, err := c.Builds.Create(ctx, old.ID, old); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if _, err := inv.layoutBuilds(ctx, c, nil); err != nil {
+		t.Fatal(err)
+	}
+	if err := inv.chainRecordBuild(ctx, c, layoutBuild("alpha", 3, "c3", "s3")); err != nil {
+		t.Fatal(err)
+	}
+	counting.gets.Store(0)
+	r, err := inv.layoutBuilds(ctx, c, nil)
+	if err != nil || r.Written != 0 {
+		t.Fatalf("the second layout %+v: %v", r, err)
+	}
+	for _, key := range []string{"alpha.newest", "alpha.worked", "alpha.held"} {
+		if e, _, _ := counting.Get(ctx, key); string(e.Value) != "build-3" {
+			t.Errorf("%s = %q after the second layout; want build-3", key, e.Value)
+		}
+	}
+	if e, _, _ := counting.Get(ctx, "alpha.commit.c3"); pointedID(e.Value) != "build-3" {
+		t.Errorf("commit c3 = %s", e.Value)
+	}
+}