diff --git a/TESTING.md b/TESTING.md
index ecf3d2d8..194a5710 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -4364,12 +4364,15 @@ the per-section hand-off panel, was retired by S12 (#329): every section is nati
   stay counted in the discovery sentence. One window only. Preview stays optional (D175): Preview changes
   shows one `section.prompt-sender-node` per node, headed "#<id> <title>", in send order (node id,
   numeric). Apply previews every node first and writes nothing if any refuses ("#<id> <title>: <reason>
-  Nothing was sent."). Then it sends one node after another: the first with its reviewed ticket, each later
-  node with a fresh ticket, because our own write may move the graph version; that fresh preview skips the
-  discovery revision check but is refused if the node's text differs from the reviewed "Before". Refusals
-  are best effort: "Sent to 2 of 3 nodes in <window>. #12 <title>: <host's refusal>." A lost reply stops
-  the run, names that node as unknown and lists the nodes not sent. Closing the dialog stops after the
-  current node. Unit tests in `tests/js/prompt-sender.test.js`, a fake three-node host in
+  Nothing was sent."). Then it sends one node after another. Only the first node of a pass taken in that
+  click keeps its ticket; every other node, and every node of a held Preview (host tickets expire after
+  30 s), takes a fresh ticket that is refused unless its Before texts and composition equal the reviewed
+  ones. That fresh preview checks the discovered revision until something has been posted, and not after,
+  since our own write may move the graph version. Refusals are best effort: "Sent to 2 of 3 nodes in
+  <window>. #12 <title>: <host's refusal>."; Apply stays available and a retry sends to every node again
+  (rewriting the same text). A lost reply stops the run, names that node as unknown and lists the nodes
+  not sent. Closing the dialog stops after the current node. The review sections are labelled by their
+  `h4` node heading. Unit tests in `tests/js/prompt-sender.test.js`, a fake three-node host in
   `tests/browser/prompt-inspector.spec.mjs`, real Classic and Nodes 2.0 widgets in
   `tests/comfyui/prompt-sender.spec.mjs`.
 - **D106** (Integrations, S10, Q8): the send bridge always asks for the ComfyUI window
diff --git a/tests/browser/prompt-inspector.spec.mjs b/tests/browser/prompt-inspector.spec.mjs
index 5d7725b2..53d9e74e 100644
--- a/tests/browser/prompt-inspector.spec.mjs
+++ b/tests/browser/prompt-inspector.spec.mjs
@@ -345,7 +345,7 @@ test('All eligible nodes previews each node, sends in node id order and names a
         await page.screenshot({path:testInfo.outputPath('send-all-option.png')});
         await sender.getByRole('button',{name:'Preview changes',exact:true}).click();
         const reviews=sender.locator('section.prompt-sender-node');
-        await expect(reviews.locator('> h3')).toHaveText(['#3 Prompt Manager (+/-)','#7 Edited in ComfyUI','#12 Prompt Manager (+/-)']);
+        await expect(reviews.locator('> h4')).toHaveText(['#3 Prompt Manager (+/-)','#7 Edited in ComfyUI','#12 Prompt Manager (+/-)']);
         await expect(sender.getByRole('region',{name:'#12 Prompt Manager (+/-)',exact:true})).toContainText('Existing 12');
         expect(await host.evaluate(()=>window.applied)).toEqual([]);
         await sender.getByRole('button',{name:'Apply to ComfyUI',exact:true}).click();
diff --git a/tests/comfyui/prompt-sender.spec.mjs b/tests/comfyui/prompt-sender.spec.mjs
index d1c342b6..1ba71bdd 100644
--- a/tests/comfyui/prompt-sender.spec.mjs
+++ b/tests/comfyui/prompt-sender.spec.mjs
@@ -151,7 +151,7 @@ test('native image inspector previews and sends a pair into real visible widgets
         await expect(sender.getByRole('status')).toContainText('1 other Prompt Manager node cannot receive this prompt.');
         await targets.selectOption({label:'All 2 eligible nodes'});
         await sender.getByRole('button',{name:'Preview changes',exact:true}).click();
-        await expect(sender.locator('section.prompt-sender-node > h3')).toHaveText([new RegExp(`^#${id} `),new RegExp(`^#${twinId} `)]);
+        await expect(sender.locator('section.prompt-sender-node > h4')).toHaveText([new RegExp(`^#${id} `),new RegExp(`^#${twinId} `)]);
         await apply.click();
         // The tab title gains ComfyUI's unsaved mark once the workflow changed, so the window is matched loosely.
         await expect(sender.getByRole('status')).toHaveText(/^Sent to 2 of 2 nodes in .*ComfyUI\.$/);
diff --git a/tests/js/prompt-sender.test.js b/tests/js/prompt-sender.test.js
index c6b81c05..3e74eb8c 100644
--- a/tests/js/prompt-sender.test.js
+++ b/tests/js/prompt-sender.test.js
@@ -315,7 +315,7 @@ test('a node whose text changed after the preview pass is refused, not overwritt
     assert.deepEqual(s.calls.filter(call=>call[0]==='apply').map(call=>call[1]),['2','9']);
     assert.match(s.session.state.message,/^Sent to 2 of 3 nodes in Flow - ComfyUI\. #10 Node 10: Its prompt changed since the preview\./);s.session.dispose();
 });
-test('Preview with All shows every node in order, and Apply sends the reviewed first ticket',async()=>{
+test('Preview with All shows every node in order, and Apply sends fresh tickets that match the review',async()=>{
     const {createSendSession,ALL_NODES}=await source;const s=await allSession(createSendSession);
     s.session.selectTarget(ALL_NODES);await s.session.preview();
     assert.equal(s.session.state.phase,'ready');assert.equal(s.session.state.preview,null);
@@ -323,8 +323,9 @@ test('Preview with All shows every node in order, and Apply sends the reviewed f
     assert.match(s.session.state.message,/Sending to all 3 eligible nodes in Flow - ComfyUI\. Review the complete changes, then apply\./);
     const first=s.session.state.previews[0].preview.ticket;
     await s.session.apply();
-    assert.deepEqual(order(s.calls),['preview 2','preview 9','preview 10','apply 2','preview 9','apply 9','preview 10','apply 10']);
-    assert.equal(s.calls.find(call=>call[0]==='apply')[2],first);
+    // A held review may have outlived the host's 30 s tickets, so even the first node takes a fresh one.
+    assert.deepEqual(order(s.calls),['preview 2','preview 9','preview 10','preview 2','apply 2','preview 9','apply 9','preview 10','apply 10']);
+    assert.notEqual(s.calls.find(call=>call[0]==='apply')[2],first);assert.equal(s.session.state.phase,'success');
     s.session.selectTarget('2');assert.deepEqual(s.session.state.previews,[]);s.session.dispose();
 });
 test('the dialog offers All for two or more nodes and reviews each node under its name',async()=>{
@@ -343,3 +344,22 @@ test('the dialog offers All for two or more nodes and reviews each node under it
         assert.ok(dom.find(dialog,node=>node.textContent==='Sent to 2 of 2 nodes in Flow - ComfyUI.'));
     } finally {scope.dispose();dom.restore();}
 });
+test('an expired review still sends every node, and a held review checks the discovered revision first',async()=>{
+    const {createSendSession,ALL_NODES}=await source;let reviewing=true;
+    // The host refuses every ticket taken during the review, as after its 30 s expiry.
+    const s=await allSession(createSendSession,{preview:(id,calls)=>({ticket:`t-${id}-${reviewing?'old':calls.length}`,target:{id},fields:[{role:'positive',before:'old',after:'new'}]}),apply:id=>({targetId:id,values:{positive:'new'}})});
+    const realApply=s.client.apply;s.client.apply=async(host,ticket,options)=>{if(ticket.endsWith('-old'))throw Error('Preview expired or unavailable; preview again');return realApply(host,ticket,options);};
+    s.session.selectTarget(ALL_NODES);await s.session.preview();reviewing=false;await s.session.apply();
+    assert.equal(s.session.state.message,'Sent to 3 of 3 nodes in Flow - ComfyUI.');s.session.dispose();
+    const moved=await allSession(createSendSession,{revision:'1:4',preview:(id,calls)=>({ticket:`t-${id}`,revision:calls.length>3?'1:5':'1:4',target:{id},fields:[{role:'positive',before:'old',after:'new'}]})});
+    moved.session.selectTarget(ALL_NODES);await moved.session.preview();assert.equal(moved.session.state.phase,'ready');await moved.session.apply();
+    assert.match(moved.session.state.message,/^Sent to 0 of 3 nodes in Flow - ComfyUI\. #2 Node 2: The workflow changed since this window was found/);
+    assert.equal(moved.calls.filter(call=>call[0]==='apply').length,0);moved.session.dispose();
+});
+test('a changed prepend or append after the review refuses that node',async()=>{
+    const {createSendSession,ALL_NODES}=await source;let edited=false;
+    const s=await allSession(createSendSession,{preview:id=>({ticket:`t-${id}`,target:{id},fields:[{role:'positive',before:'old',after:'new'}],composition:{prepend:id==='9'&&edited?'typed':'trigger',append:'',before:'trigger old',after:'trigger new'}}),apply:id=>{edited=true;return{targetId:id,values:{positive:'new'}};}});
+    s.session.selectTarget(ALL_NODES);await s.session.apply();
+    assert.deepEqual(s.calls.filter(call=>call[0]==='apply').map(call=>call[1]),['2','10']);
+    assert.match(s.session.state.message,/^Sent to 2 of 3 nodes in Flow - ComfyUI\. #9 Node 9: Its prompt changed since the preview\./);s.session.dispose();
+});
diff --git a/web/js/workspace/prompt-sender.mjs b/web/js/workspace/prompt-sender.mjs
index 609e3c93..196ed480 100644
--- a/web/js/workspace/prompt-sender.mjs
+++ b/web/js/workspace/prompt-sender.mjs
@@ -77,6 +77,8 @@ export function createSendSession({client, roles:rawRoles, onChange}) {
     function checkAcknowledgement(acknowledgement,targetId) {
         if(acknowledgement?.targetId!==targetId || !acknowledgement.values || Object.keys(acknowledgement.values).length!==Object.keys(roles).length || Object.keys(roles).some(role=>!Object.hasOwn(acknowledgement.values,role) || acknowledgement.values[role]!==roles[role])) throw Error('ComfyUI returned an unexpected acknowledgement.');
     }
+    const reviewedText = change => JSON.stringify([change.fields.map(field=>[field.role,field.before]).sort(),change.composition ?? null]);
+    const sameChanges = (reviewed,fresh) => reviewedText(reviewed)===reviewedText(fresh);
     /** Q542-2 C: every node of "All" previews before anything is written; the first refusal names its node. */
     async function previewEach(request,hostId,targets) {
         const reviewed=[];
@@ -92,21 +94,25 @@ export function createSendSession({client, roles:rawRoles, onChange}) {
         }
         return reviewed;
     }
-    /** Sends the reviewed nodes one after another (each host apply checks its own preview), best effort past refusals. */
-    async function applyEach(request,hostId,reviewed,where) {
-        const sent=[],refused=[];
+    /**
+     * Sends the reviewed nodes one after another, best effort past refusals. Only the first node of a pass taken in this
+     * click keeps its ticket: a held review may have expired at the host (30 s), and our own writes may make later
+     * tickets stale, so every other node takes a fresh ticket that must show exactly the reviewed text.
+     */
+    async function applyEach(request,hostId,reviewed,where,held) {
+        const sent=[],refused=[];let written=false;
         for (const [index,{target,preview}] of reviewed.entries()) {
             let posted=false;
             try {
                 let ticket=preview.ticket;
-                if (index>0) {
-                    // A ticket taken before our earlier writes may be stale, so take a fresh one, but only for the text reviewed.
-                    const fresh=await fetchPreview(request,hostId,target,false);
+                if (index>0 || held) {
+                    // Until something was posted the revision is still the discovered one; after that our own write may move it.
+                    const fresh=await fetchPreview(request,hostId,target,!written);
                     if (!fresh) return;
-                    if (fresh.fields.some(field=>preview.fields.find(item=>item.role===field.role)?.before!==field.before)) throw Error('Its prompt changed since the preview. Preview again.');
+                    if (!sameChanges(preview,fresh)) throw Error('Its prompt changed since the preview. Preview again.');
                     ticket=fresh.ticket;
                 }
-                posted=true;
+                posted=written=true;
                 const acknowledgement=await client.apply(hostId,ticket,{signal:request.signal});
                 if (!current(request)) return;
                 checkAcknowledgement(acknowledgement,target.id);
@@ -185,7 +191,7 @@ export function createSendSession({client, roles:rawRoles, onChange}) {
                 let reviewed;
                 try { reviewed=held?.length ? held : await previewEach(request,hostId,targets); }
                 catch(error) { if(current(request)) emit({phase:'error',message:error.message}); return; }
-                if (reviewed) await applyEach(request,hostId,reviewed,windowLabel);
+                if (reviewed) await applyEach(request,hostId,reviewed,windowLabel,Boolean(held?.length));
                 return;
             }
             const [target]=targets;
@@ -250,7 +256,7 @@ export function createPromptSender({scope,baseUrl=window.ApiClient.resolveUrl('/
         inspect.disabled=true;apply.disabled=true;
         const actions=element('footer',undefined,'prompt-sender-actions');actions.append(find,inspect,apply);
         dialog.append(header,description,controls,status,preview,actions);document.body.append(dialog);
-        let session,closed=false;
+        let session,closed=false,headingIds=0;
         function dispose() {
             if(closed) return;closed=true;local.dispose();session?.dispose();
             if(dialog.open) dialog.close();dialog.remove();
@@ -268,7 +274,7 @@ export function createPromptSender({scope,baseUrl=window.ApiClient.resolveUrl('/
             select.replaceChildren(...[["",placeholder],...entries].map(([value,label])=>{const option=element('option',label);option.value=value;return option;}));select.value=value;
         }
         function textBlock(parent,label,value,level=4) {
-            parent.append(element(`h${level}`,label));const text=element('pre');text.tabIndex=0;text.append(element('code',value === '' ? '(empty)' : value));parent.append(text);
+            parent.append(element(`h${Math.min(level,6)}`,label));const text=element('pre');text.tabIndex=0;text.append(element('code',value === '' ? '(empty)' : value));parent.append(text);
         }
         function render(state) {
             if(closed) return;
@@ -291,10 +297,11 @@ export function createPromptSender({scope,baseUrl=window.ApiClient.resolveUrl('/
             }
             if(state.previews?.length) {
                 preview.append(element('h3','Review changes'));
-                // One section per node of "All", in the order they will be sent.
+                // One section per node of "All", in the order they will be sent, named by its heading.
                 for(const item of state.previews) {
-                    const node=element('section',undefined,'prompt-sender-node');node.setAttribute('aria-label',item.label);
-                    node.append(element('h3',item.label));changes(node,item.preview,4);preview.append(node);
+                    const node=element('section',undefined,'prompt-sender-node');const heading=element('h4',item.label);
+                    heading.id=`prompt-sender-node-${++headingIds}`;node.setAttribute('aria-labelledby',heading.id);
+                    node.append(heading);changes(node,item.preview,5);preview.append(node);
                 }
             }
         }
diff --git a/web/js/workspace/workspace.css b/web/js/workspace/workspace.css
index 9dfce5b4..05b569be 100644
--- a/web/js/workspace/workspace.css
+++ b/web/js/workspace/workspace.css
@@ -418,7 +418,7 @@ pre.prompt-text { font: inherit; font-size: 12px; line-height: 1.75; margin-bloc
 .prompt-sender-field :where(pre, textarea), .prompt-sender-composition { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; font-size: 12px; line-height: 1.65; max-inline-size: 100%; /* D48 */ }
 /* D191 (#542): each node of "All eligible nodes" reviews under its own heading. */
 .prompt-sender-node { border-block-start: 1px solid var(--ca-line); padding-block-start: 14px; margin-block: 18px; min-inline-size: 0; /* D191 */ }
-.prompt-sender-node > h3 { font-size: 15px; /* D191 */ }
+.prompt-sender-node > h4 { font-size: 15px; /* D191 */ }
 .prompt-sender-field textarea { inline-size: 100%; min-block-size: 100px; resize: vertical; /* D48 */ }
 .prompt-sender-composition { padding: 12px; background: var(--ca-field); border-radius: 6px; /* D48 */ }
 .prompt-sender-actions { justify-content: flex-end; margin-block-start: 18px; /* D48 */ }