diff --git a/api/src/services/aem.service.ts b/api/src/services/aem.service.ts
index 740cae9b0..2996e6088 100644
--- a/api/src/services/aem.service.ts
+++ b/api/src/services/aem.service.ts
@@ -1372,6 +1372,24 @@ const createEntry = async ({
     const content: unknown = await fs.promises.readFile(filePath, 'utf-8');
     if (typeof content === 'string') {
       const parseData = JSON.parse(content);
+
+      // AEM can export a page TEMPLATE's own structure/schema definition (e.g.
+      // /conf/.../settings/wcm/templates/<template>/structure[.html]) as a separate file
+      // alongside real pages that use that template — it isn't content, just the
+      // template's own component-allow-list. Exclude it outright rather than letting it
+      // compete with a real page for the same derived id (see CMG-1112): this removes the
+      // ambiguity entirely instead of leaving the outcome dependent on directory-walk order.
+      const repoPath: string | undefined = parseData?.dataLayer?.[parseData?.id]?.['repo:path'];
+      if (repoPath && /\/settings\/wcm\/templates\/[^/]+\/structure(\.html)?$/.test(repoPath)) {
+        await customLogger(
+          projectId,
+          destinationStackId,
+          'warn',
+          getLogMessage(srcFunc, `Skipped entry from "${fileName}": AEM template structure/schema definition, not real content (repo:path "${repoPath}").`, {})
+        );
+        continue;
+      }
+
       // Use the page model's stable "id" as the entry uid so uid-mapper keys
       // stay consistent across delta iterations; random uuid only as fallback.
       let modelId = typeof parseData?.id === 'string' && parseData.id.trim() !== ''
@@ -1381,16 +1399,40 @@ const createEntry = async ({
       // pages like content-page) carry no stable page "id"; derive a stable uid
       // from title + templateType (or just templateType when there's no title)
       // so they track across iterations (must match extractEntries in
-      // upload-api's migration-aem).
+      // upload-api/migration-aem/libs/entries/index.ts).
       if (!modelId && parseData?.templateType) {
         modelId = parseData?.title
           ? uidCorrector(`${parseData.title}_${parseData.templateType}`)
           : uidCorrector(parseData.templateType);
       }
-      const uid = modelId && !usedEntryUids.has(modelId)
-        ? modelId
-        : uuidv4?.()?.replace?.(/-/g, '');
-      usedEntryUids.add(uid);
+      // Locale must be part of the collision key, computed before the check: two
+      // locale variants of the SAME page legitimately share a modelId (that's how they
+      // end up localized onto one Contentstack entry), so keying on modelId alone would
+      // wrongly skip every locale variant after the first one instead of writing each to
+      // its own locale bucket.
+      const locale = getCurrentLocale(parseData);
+      const mappedLocale = locale ? getLocaleFromMapper(allLocales as Record<string, string>, locale) : Object?.keys?.(project?.master_locale ?? {})?.[0];
+      const collisionKey = modelId ? `${modelId}::${mappedLocale}` : '';
+      // A collisionKey (modelId + locale) already seen earlier in this same run means this
+      // file is a genuine duplicate export of the same page in the same locale — skip it
+      // instead of minting a fresh random uid. A random uid here would create a second,
+      // permanent duplicate entry that mints yet another untracked random uid (another
+      // duplicate) on every subsequent delta iteration, since it can never match anything
+      // recorded in entry_mapper (api/src/models/EntryMapper.ts) — the way extractEntries's
+      // own collision policy already works in upload-api/migration-aem/libs/entries/index.ts.
+      if (collisionKey && usedEntryUids.has(collisionKey)) {
+        await customLogger(
+          projectId,
+          destinationStackId,
+          'warn',
+          getLogMessage(srcFunc, `Skipped duplicate entry from "${fileName}": uid "${modelId}" (locale "${mappedLocale}") already used in this run.`, {})
+        );
+        continue;
+      }
+      const uid = modelId || uuidv4?.()?.replace?.(/-/g, '');
+      if (collisionKey) {
+        usedEntryUids.add(collisionKey);
+      }
       const title = getTitle(parseData);
       const isEFragment = isExperienceFragment(parseData);
       const templateUid = isEFragment?.isXF ? parseData?.title : parseData?.templateName ?? parseData?.templateType;
@@ -1398,8 +1440,6 @@ const createEntry = async ({
       if (!contentType && parseData?.title) {
         contentType = (contentTypes as ContentType[] | undefined)?.find?.((element) => element?.otherCmsUid === parseData?.title);
       }
-      const locale = getCurrentLocale(parseData);
-      const mappedLocale = locale ? getLocaleFromMapper(allLocales as Record<string, string>, locale) : Object?.keys?.(project?.master_locale ?? {})?.[0];
       const items = parseData?.[':items']?.root?.[':items'];
       const data = containerCreator(contentType?.fieldMapping, items, title, pathToUidMap, assetDetailsMap);
       data.uid = uid;
diff --git a/ui/src/components/ContentMapper/assetMapper.tsx b/ui/src/components/ContentMapper/assetMapper.tsx
index 04af48499..d12d19222 100644
--- a/ui/src/components/ContentMapper/assetMapper.tsx
+++ b/ui/src/components/ContentMapper/assetMapper.tsx
@@ -105,6 +105,7 @@ const AssetMapper = ({
   const tableHeight = useMeasuredTableHeight(tableWrapperRef, [tableData?.length], {
     panelSelector: '.TablePanel',
     footerSelector: '.mapper-footer',
+    toolbarSelector: '.asset-mapper-toolbar',
   });
 
   // Single server-paginated fetch (same pattern as entryMapper's fetchEntries). The
diff --git a/ui/src/components/ContentMapper/useMeasuredTableHeight.ts b/ui/src/components/ContentMapper/useMeasuredTableHeight.ts
index 1b0e559c5..ebdfff1e0 100644
--- a/ui/src/components/ContentMapper/useMeasuredTableHeight.ts
+++ b/ui/src/components/ContentMapper/useMeasuredTableHeight.ts
@@ -23,6 +23,13 @@ export interface MeasuredTableHeightOptions {
   panelSelector: string;
   /** Selector for the Save footer, resolved within `wrapperRef`. */
   footerSelector: string;
+  /**
+   * Selector for an extra chrome row above the table (e.g. the asset mapper's status-filter
+   * toolbar) that takes its own flex-flow height, resolved within `wrapperRef`. Omit when the
+   * mapper has no such row (e.g. the entry mapper, whose locale select is absolutely positioned
+   * and doesn't need reserving).
+   */
+  toolbarSelector?: string;
 }
 
 // Fixed chrome fallbacks, used only until the real elements are mounted/measured.
@@ -42,7 +49,7 @@ const TOGGLE_SELECTOR = '.mapper-view-toggle';
 export function useMeasuredTableHeight(
   wrapperRef: RefObject<HTMLElement | null>,
   deps: unknown[],
-  { panelSelector, footerSelector }: MeasuredTableHeightOptions,
+  { panelSelector, footerSelector, toolbarSelector }: MeasuredTableHeightOptions,
 ): number {
   // Pre-measure guess: same model as measure() (box fallback − reserve), clamped to the floor
   // so the one frame react-window renders before the effect runs never gets a negative height.
@@ -61,6 +68,9 @@ export function useMeasuredTableHeight(
       const toggle = box?.querySelector(TOGGLE_SELECTOR) as HTMLElement | null;
       const panel = wrapper.querySelector(panelSelector) as HTMLElement | null;
       const footer = wrapper.querySelector(footerSelector) as HTMLElement | null;
+      const toolbar = toolbarSelector
+        ? (wrapper.querySelector(toolbarSelector) as HTMLElement | null)
+        : null;
 
       if (import.meta.env.DEV) {
         // A rename/markup change in venus would drop us to the magic constants and quietly
@@ -68,6 +78,7 @@ export function useMeasuredTableHeight(
         if (!box) console.warn(`useMeasuredTableHeight: "${BOX_SELECTOR}" not found — falling back.`);
         if (!panel) console.warn(`useMeasuredTableHeight: "${panelSelector}" not found — using ${PANEL_FALLBACK}px fallback.`);
         if (!footer) console.warn(`useMeasuredTableHeight: "${footerSelector}" not found — using ${FOOTER_FALLBACK}px fallback.`);
+        if (toolbarSelector && !toolbar) console.warn(`useMeasuredTableHeight: "${toolbarSelector}" not found — not reserving space for it.`);
       }
 
       // `||` not `??`: a momentarily 0-height box (measured before layout settles) should
@@ -77,6 +88,7 @@ export function useMeasuredTableHeight(
         (toggle?.offsetHeight ?? 0) +
         (panel?.offsetHeight ?? PANEL_FALLBACK) +
         (footer?.offsetHeight ?? FOOTER_FALLBACK) +
+        (toolbar?.offsetHeight ?? 0) +
         PAGINATION_AND_BUFFER;
       // Clamp rather than skip: at extreme zoom `avail` can dip low, but keeping the previous
       // (possibly large) value would re-expose the overflow this hook exists to prevent.
diff --git a/ui/src/components/LegacyCms/legacyCms.scss b/ui/src/components/LegacyCms/legacyCms.scss
index e96b98782..23d80a4bd 100644
--- a/ui/src/components/LegacyCms/legacyCms.scss
+++ b/ui/src/components/LegacyCms/legacyCms.scss
@@ -83,16 +83,20 @@
   background-color: $color-base-white-5;
   flex-direction: column;
   justify-content: center;
-  align-items: flex-start;
+  // Stretch (not flex-start) so the path row keeps the container's full width — flex-start
+  // let it shrink-to-fit for short/invalid paths, visibly narrowing the input (CMG-1113).
+  align-items: stretch;
   margin-left: 20px !important;
   border: 1px solid $color-brand-fail-base;
   border-radius: var(--TermCount, 5px);
   min-height: 72px;
   width: 560px;
-  margin-left: 20px !important;
+  // Match .validation-container's own padding (line 75) instead of a child left-margin —
+  // a child margin only pushes content in from the left, leaving it flush against the
+  // right border, so the row was still a different width from the neutral state (CMG-1113).
+  padding: 10px 15px;
 }
 .error-container > * {
-  margin-left: 10px;
   margin-top: 5px;
 }