diff --git a/src/automats/deliveryEditorAutomat.js b/src/automats/deliveryEditorAutomat.js
index 12fb723..c47d8d0 100644
--- a/src/automats/deliveryEditorAutomat.js
+++ b/src/automats/deliveryEditorAutomat.js
@@ -77,12 +77,19 @@ function parseNum(value) {
  * @returns {DeliveryLine} Normalized line.
  */
 export function createEmptyLineitem(line = {}) {
-  const netRaw = line.netprice ?? line.net ?? line.eknetto ?? line.netPrice ?? null;
+  let netVal = null;
+  if (line.netprice != null || line.net != null || line.netPrice != null) {
+    const netRaw = line.netprice ?? line.net ?? line.netPrice;
+    netVal = netRaw != null ? (parseNum(netRaw) ?? netRaw) : null;
+  } else if (line.eknetto != null && line.eknetto !== '') {
+    const parsedCent = parseNum(line.eknetto);
+    netVal = parsedCent != null ? Math.round((parsedCent / 100) * 10000) / 10000 : null;
+  }
+
   const taxRaw = line.taxrate ?? line.tax ?? line.mwst ?? line.taxRate ?? null;
   const amountRaw = line.amount ?? line.count ?? line.qty ?? line.quantity ?? null;
   const puRaw = line.pu ?? line.vpe ?? null;
 
-  const netVal = netRaw != null ? (parseNum(netRaw) ?? netRaw) : null;
   const taxVal = taxRaw != null ? (parseNum(taxRaw) ?? taxRaw) : null;
   const amountVal = amountRaw != null ? (parseNum(amountRaw) ?? amountRaw) : null;
   const puVal = puRaw != null ? (parseNum(puRaw) ?? puRaw) : null;
diff --git a/src/components/chat/ChatFlowList.jsx b/src/components/chat/ChatFlowList.jsx
index a4d4a3e..ee3dfb6 100644
--- a/src/components/chat/ChatFlowList.jsx
+++ b/src/components/chat/ChatFlowList.jsx
@@ -19,7 +19,7 @@ import DeleteForeverIcon from '@mui/icons-material/DeleteForever';
 import DeleteIcon from '@mui/icons-material/Delete';
 import GoogleIcon from '@mui/icons-material/Google';
 import WebIcon from '@mui/icons-material/Web';
-import EscalatorWarningIcon from '@mui/icons-material/EscalatorWarning';
+import EngineeringIcon from '@mui/icons-material/Engineering';
 import PictureAsPdfIcon from '@mui/icons-material/PictureAsPdf';
 import ManageSearchIcon from '@mui/icons-material/ManageSearch';
 import LensBlurIcon from '@mui/icons-material/LensBlur';
@@ -91,7 +91,9 @@ const TOOL_ICON_MAP = {
   rm: DeleteIcon,
   web_search: GoogleFaviconIcon,
   url_get: WebIcon,
-  sub_agent: EscalatorWarningIcon,
+  subagent: EngineeringIcon,
+  sub_agent: EngineeringIcon,
+  'sub-agent': EngineeringIcon,
   pdf_read: PictureAsPdfIcon,
   search_articles: ManageSearchIcon,
   edit_image: LensBlurIcon,
diff --git a/src/components/manifest/manifestConfig.js b/src/components/manifest/manifestConfig.js
index cc825d1..8de78b2 100644
--- a/src/components/manifest/manifestConfig.js
+++ b/src/components/manifest/manifestConfig.js
@@ -454,7 +454,7 @@ export function collectFilesForUpload(attachments = [], { onlyNew = false } = {}
  */
 export async function buildManifestBody(
   form,
-  { partyField, requireAtLeastOne, externalNumber: useExternalNumber, kind, isUpdate, mode },
+  { partyField, requireAtLeastOne, externalNumber: useExternalNumber, kind, isUpdate, mode, omitLines },
 ) {
   const date = form.date;
   if (!date) throw new Error('Datum fehlt.');
@@ -462,6 +462,7 @@ export async function buildManifestBody(
   const externalNumber = String(form.externalNumber ?? '').trim();
   const isEdit = isUpdate != null ? Boolean(isUpdate) : (mode === 'edit' || !requireAtLeastOne);
   const shouldRequireLine = requireAtLeastOne !== false;
+  const shouldIncludeLines = !omitLines && form.lines !== undefined && form.lines !== null;
 
   let body;
   if (kind === 'delivery') {
@@ -470,8 +471,10 @@ export async function buildManifestBody(
     body = {
       externalNumber: externalNumber || null,
       date,
-      lines: buildLines(form.lines, { requireAtLeastOne: shouldRequireLine }),
     };
+    if (shouldIncludeLines) {
+      body.lines = buildLines(form.lines, { requireAtLeastOne: shouldRequireLine });
+    }
   } else {
     let number = String(form.number ?? '').trim();
     if (!number) {
@@ -481,8 +484,10 @@ export async function buildManifestBody(
     body = {
       number,
       date,
-      lines: buildLines(form.lines, { requireAtLeastOne: shouldRequireLine }),
     };
+    if (shouldIncludeLines) {
+      body.lines = buildLines(form.lines, { requireAtLeastOne: shouldRequireLine });
+    }
     if (useExternalNumber || form.externalNumber != null) {
       body.externalNumber = externalNumber || null;
     }
diff --git a/src/routes/lieferung/neu.jsx b/src/routes/lieferung/neu.jsx
index 7c542b4..0992762 100644
--- a/src/routes/lieferung/neu.jsx
+++ b/src/routes/lieferung/neu.jsx
@@ -57,6 +57,51 @@ import {
   YELLOW_BG,
 } from '../../colors';
 
+function areLinesEqual(lines1, lines2) {
+  if (!Array.isArray(lines1) || !Array.isArray(lines2)) return false;
+  if (lines1.length !== lines2.length) return false;
+  for (let i = 0; i < lines1.length; i++) {
+    const a = lines1[i] || {};
+    const b = lines2[i] || {};
+    const aSku = String(a.sku ?? '').trim();
+    const bSku = String(b.sku ?? '').trim();
+    if (aSku !== bSku) return false;
+
+    const aName = String(a.name ?? '').trim();
+    const bName = String(b.name ?? '').trim();
+    if (aName !== bName) return false;
+
+    const aAmount = a.amount != null && a.amount !== '' ? Number(a.amount) : null;
+    const bAmount = b.amount != null && b.amount !== '' ? Number(b.amount) : null;
+    if (aAmount !== bAmount) return false;
+
+    const aNet =
+      (a.netprice ?? a.net) != null && (a.netprice ?? a.net) !== ''
+        ? Number(a.netprice ?? a.net)
+        : null;
+    const bNet =
+      (b.netprice ?? b.net) != null && (b.netprice ?? b.net) !== ''
+        ? Number(b.netprice ?? b.net)
+        : null;
+    if (aNet !== bNet) return false;
+
+    const aTax =
+      (a.taxrate ?? a.tax) != null && (a.taxrate ?? a.tax) !== ''
+        ? Number(a.taxrate ?? a.tax)
+        : null;
+    const bTax =
+      (b.taxrate ?? b.tax) != null && (b.taxrate ?? b.tax) !== ''
+        ? Number(b.taxrate ?? b.tax)
+        : null;
+    if (aTax !== bTax) return false;
+
+    const aPu = a.pu != null && a.pu !== '' ? Number(a.pu) : 1;
+    const bPu = b.pu != null && b.pu !== '' ? Number(b.pu) : 1;
+    if (aPu !== bPu) return false;
+  }
+  return true;
+}
+
 class LieferungNeuPage extends PureComponent {
   constructor(props) {
     super(props);
@@ -150,6 +195,7 @@ class LieferungNeuPage extends PureComponent {
       this.automat = getDeliveryEditorAutomat(this.props.docId);
       this.unsubscribe = this.automat.subscribe(this);
       this.setState({ ...this.automat.state });
+      this._initialLines = null;
       if (this.props.docId != null) {
         void this.loadEdit();
       } else {
@@ -227,6 +273,7 @@ class LieferungNeuPage extends PureComponent {
       if (doc.number != null) this.automat.actions.setNumber(doc.number);
       if (doc.externalNumber != null) this.automat.actions.setExternalNumber(String(doc.externalNumber));
       this.automat.actions.setLineitems(lines);
+      this._initialLines = lines;
 
       // Restore attachments with thumbnails
       const apiFiles = doc.files ?? [];
@@ -786,9 +833,24 @@ class LieferungNeuPage extends PureComponent {
     });
   }
 
-  handlePdfDelete(attachment) {
-    if (!attachment?.id) return;
-    this.automat.actions.removeAttachment(attachment.id);
+  async handlePdfDelete(attachment) {
+    if (!attachment) return;
+    const fileId = attachment.fileId ?? attachment.id;
+    const docId = this.props.docId ?? attachment.manifestId ?? this.state.id;
+
+    this.automat.actions.removeAttachment(attachment.id ?? fileId);
+    if (fileId != null && fileId !== attachment.id) {
+      this.automat.actions.removeAttachment(fileId);
+    }
+
+    if (docId != null && fileId != null && attachment.isPersisted) {
+      try {
+        await deliveryApi.deleteFile(docId, fileId);
+        enqueueSnackbar('Anhang gelöscht.', { variant: 'success' });
+      } catch (err) {
+        notifyError(err);
+      }
+    }
   }
 
   async ensureAttachmentFile(attachment) {
@@ -1031,6 +1093,9 @@ class LieferungNeuPage extends PureComponent {
     if (this.state.saving) return;
 
     const isCreate = docId == null;
+    const linesModified =
+      isCreate || !this._initialLines || !areLinesEqual(this.state.lines, this._initialLines);
+
     let body;
     try {
       body = await buildManifestBody(
@@ -1039,13 +1104,17 @@ class LieferungNeuPage extends PureComponent {
           externalNumber: this.state.externalNumber ?? '',
           date: this.state.date ?? '',
           partyId: this.state.partyId,
-          lines: this.state.lines,
+          lines: linesModified ? this.state.lines : undefined,
           attachments: this.state.attachments,
         },
         {
+          kind: cfg.kind,
           partyField: cfg.partyField,
           requireAtLeastOne: isCreate,
           externalNumber: cfg.externalNumber,
+          isUpdate: !isCreate,
+          mode: isCreate ? 'create' : 'edit',
+          omitLines: !linesModified,
         },
       );
     } catch (err) {
@@ -1083,6 +1152,7 @@ class LieferungNeuPage extends PureComponent {
         if (doc.number != null) this.automat.actions.setNumber(doc.number);
         if (doc.externalNumber != null) this.automat.actions.setExternalNumber(String(doc.externalNumber));
         this.automat.actions.setLineitems(lines);
+        this._initialLines = lines;
         void this.reloadLedgerSummary();
 
         // Restore attachments with thumbnails