diff --git a/eng/performance/maui_scenarios_android.proj b/eng/performance/maui_scenarios_android.proj
index 5ef4fa5ef01..f8038f2885a 100644
--- a/eng/performance/maui_scenarios_android.proj
+++ b/eng/performance/maui_scenarios_android.proj
@@ -82,12 +82,13 @@
 
 <!-- We only run the android tests from Windows machines (at least for now) -->
   <ItemGroup>
+    <!-- SizeOnDisk recursively measures pub, so stage only the APK and versions.json (removed by test.py in the lab). -->
     <HelixWorkItem Include="@(MAUIAndroidScenario -> 'SOD - %(Identity) APK Size')" Condition="!$(HelixTargetQueue.ToLowerInvariant().Contains('pixel'))">
-      <PreCommands>echo on; xcopy %HELIX_CORRELATION_PAYLOAD%\$(PreparePayloadOutDirectoryName)\%(HelixWorkItem.ScenarioDirectoryName) %HELIX_WORKITEM_ROOT%\pub\ /E /I /Y</PreCommands>
+      <PreCommands>echo on; if not exist "%HELIX_WORKITEM_ROOT%\pub" mkdir "%HELIX_WORKITEM_ROOT%\pub"; copy /Y "%HELIX_CORRELATION_PAYLOAD%\$(PreparePayloadOutDirectoryName)\%(HelixWorkItem.ScenarioDirectoryName)\%(HelixWorkItem.ApkName).apk" "%HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).apk"; copy /Y "%HELIX_CORRELATION_PAYLOAD%\$(PreparePayloadOutDirectoryName)\%(HelixWorkItem.ScenarioDirectoryName)\versions.json" "%HELIX_WORKITEM_ROOT%\pub\versions.json"</PreCommands>
       <Command>$(Python) test.py sod --scenario-name &quot;%(Identity)&quot; $(ScenarioArgs)</Command>
     </HelixWorkItem>
     <HelixWorkItem Include="@(MAUIAndroidScenario -> 'SOD - %(Identity) Extracted Size')" Condition="!$(HelixTargetQueue.ToLowerInvariant().Contains('pixel'))">
-      <PreCommands>echo on; xcopy %HELIX_CORRELATION_PAYLOAD%\$(PreparePayloadOutDirectoryName)\%(HelixWorkItem.ScenarioDirectoryName) %HELIX_WORKITEM_ROOT%\pub\ /E /I /Y; ren %HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).apk %(HelixWorkItem.ApkName).zip; powershell.exe -nologo -noprofile -command "&amp; {Expand-Archive %HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).zip -DestinationPath %HELIX_WORKITEM_ROOT%\pub\}"; del %HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).zip</PreCommands>
+      <PreCommands>echo on; if not exist "%HELIX_WORKITEM_ROOT%\pub" mkdir "%HELIX_WORKITEM_ROOT%\pub"; copy /Y "%HELIX_CORRELATION_PAYLOAD%\$(PreparePayloadOutDirectoryName)\%(HelixWorkItem.ScenarioDirectoryName)\%(HelixWorkItem.ApkName).apk" "%HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).apk"; copy /Y "%HELIX_CORRELATION_PAYLOAD%\$(PreparePayloadOutDirectoryName)\%(HelixWorkItem.ScenarioDirectoryName)\versions.json" "%HELIX_WORKITEM_ROOT%\pub\versions.json"; ren "%HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).apk" "%(HelixWorkItem.ApkName).zip"; powershell.exe -nologo -noprofile -command "&amp; {Expand-Archive '%HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).zip' -DestinationPath '%HELIX_WORKITEM_ROOT%\pub'}"; del "%HELIX_WORKITEM_ROOT%\pub\%(HelixWorkItem.ApkName).zip"</PreCommands>
       <Command>$(Python) test.py sod --scenario-name &quot;%(Identity)&quot; $(ScenarioArgs)</Command>
     </HelixWorkItem>
     <HelixWorkItem Include="@(MAUIAndroidScenario -> 'Device Startup - %(Identity)')">
diff --git a/eng/performance/maui_scenarios_ios.proj b/eng/performance/maui_scenarios_ios.proj
index 084344d6aa0..476de2f043c 100644
--- a/eng/performance/maui_scenarios_ios.proj
+++ b/eng/performance/maui_scenarios_ios.proj
@@ -76,12 +76,14 @@
   </ItemGroup>
 
   <ItemGroup>
+    <!-- SizeOnDisk recursively measures pub, so stage only the IPA and versions.json (removed by test.py in the lab). -->
     <HelixWorkItem Include="@(MAUIiOSScenario -> 'SOD - %(Identity) IPA Size')">
-      <PreCommands>cp -r $HELIX_CORRELATION_PAYLOAD/$(PreparePayloadOutDirectoryName)/%(HelixWorkItem.ScenarioDirectoryName) $HELIX_WORKITEM_ROOT/pub</PreCommands>
+      <PreCommands>mkdir -p "$HELIX_WORKITEM_ROOT/pub" &amp;&amp; cp "$HELIX_CORRELATION_PAYLOAD/$(PreparePayloadOutDirectoryName)/%(HelixWorkItem.ScenarioDirectoryName)/%(HelixWorkItem.IPAName).ipa" "$HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).ipa" &amp;&amp; cp "$HELIX_CORRELATION_PAYLOAD/$(PreparePayloadOutDirectoryName)/%(HelixWorkItem.ScenarioDirectoryName)/versions.json" "$HELIX_WORKITEM_ROOT/pub/versions.json"</PreCommands>
       <Command>$(Python) test.py sod --scenario-name &quot;%(Identity)&quot; $(ScenarioArgs)</Command>
     </HelixWorkItem>
+    <!-- Extract only Payload so the app bundle is measured without the IPA's Symbols directory. -->
     <HelixWorkItem Include="@(MAUIiOSScenario -> 'SOD - %(Identity) Extracted Size')">
-      <PreCommands>cp -r $HELIX_CORRELATION_PAYLOAD/$(PreparePayloadOutDirectoryName)/%(HelixWorkItem.ScenarioDirectoryName) $HELIX_WORKITEM_ROOT/pub; mv $HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).ipa $HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).zip; unzip -d $HELIX_WORKITEM_ROOT/pub $HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).zip; rm $HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).zip</PreCommands>
+      <PreCommands>mkdir -p "$HELIX_WORKITEM_ROOT/pub" &amp;&amp; cp "$HELIX_CORRELATION_PAYLOAD/$(PreparePayloadOutDirectoryName)/%(HelixWorkItem.ScenarioDirectoryName)/%(HelixWorkItem.IPAName).ipa" "$HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).ipa" &amp;&amp; cp "$HELIX_CORRELATION_PAYLOAD/$(PreparePayloadOutDirectoryName)/%(HelixWorkItem.ScenarioDirectoryName)/versions.json" "$HELIX_WORKITEM_ROOT/pub/versions.json" &amp;&amp; mv "$HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).ipa" "$HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).zip" &amp;&amp; unzip -d "$HELIX_WORKITEM_ROOT/pub" "$HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).zip" 'Payload/*' &amp;&amp; rm "$HELIX_WORKITEM_ROOT/pub/%(HelixWorkItem.IPAName).zip"</PreCommands>
       <Command>$(Python) test.py sod --scenario-name &quot;%(Identity)&quot; $(ScenarioArgs)</Command>
     </HelixWorkItem>
     <HelixWorkItem Include="@(MAUIiOSScenario -> 'Build Time - %(Identity)')">