diff --git a/.github/workflows/plc-gate.yml b/.github/workflows/plc-gate.yml
index ab71891..d06fcd6 100644
--- a/.github/workflows/plc-gate.yml
+++ b/.github/workflows/plc-gate.yml
@@ -18,8 +18,11 @@ jobs:
       - name: ArfBot.xml must differ from main
         run: |
           set -euo pipefail
-          if git diff --quiet origin/main...HEAD -- Codesys/ArfBot.xml; then
-            echo "::error::Codesys/ArfBot.xml has no diff vs main."
+          # Two-dot (or blob) compare: file on main vs file in this checkout.
+          # Three-dot (A...B) uses a merge-base; with criss-cross main/dev merges
+          # git can pick a base equal to HEAD and report an empty diff.
+          if git diff --quiet origin/main HEAD -- Codesys/ArfBot.xml; then
+            echo "::error::Codesys/ArfBot.xml is identical to main."
             echo "Export PLCopen XML (Project → Export) after changing the PLC project or stamping GVL_Version.sPlcVersion."
             exit 1
           fi
@@ -28,12 +31,12 @@ jobs:
       - name: If ArfBot.project changed, XML must also change
         run: |
           set -euo pipefail
-          if git diff --quiet origin/main...HEAD -- Codesys/ArfBot.project; then
+          if git diff --quiet origin/main HEAD -- Codesys/ArfBot.project; then
             echo "ArfBot.project unchanged; skip paired-export check."
             exit 0
           fi
-          if git diff --quiet origin/main...HEAD -- Codesys/ArfBot.xml; then
-            echo "::error::ArfBot.project changed but ArfBot.xml did not. Re-export PLCopen XML."
+          if git diff --quiet origin/main HEAD -- Codesys/ArfBot.xml; then
+            echo "::error::ArfBot.project changed but ArfBot.xml is identical to main. Re-export PLCopen XML."
             exit 1
           fi
           echo "Project and XML both changed."
diff --git a/Codesys/ArfBot.project b/Codesys/ArfBot.project
index bcae45d..f95a58b 100644
Binary files a/Codesys/ArfBot.project and b/Codesys/ArfBot.project differ
diff --git a/Codesys/ArfBot.xml b/Codesys/ArfBot.xml
index bdf7698..4d0ea84 100644
--- a/Codesys/ArfBot.xml
+++ b/Codesys/ArfBot.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <project xmlns="http://www.plcopen.org/xml/tc6_0200">
-  <fileHeader companyName="" productName="CODESYS" productVersion="CODESYS V3.5 SP22 Patch 3" creationDateTime="2026-09-12T16:46:07.7346949" />
-  <contentHeader name="ArfBotOS" version="1.0.0" modificationDateTime="2026-09-12T16:44:52.4520695" organization="Thomas Labs" author="Dale Thomas">
+  <fileHeader companyName="" productName="CODESYS" productVersion="CODESYS V3.5 SP22 Patch 3" creationDateTime="2026-09-12T16:59:03.7424811" />
+  <contentHeader name="ArfBotOS" version="1.0.0" modificationDateTime="2026-09-12T16:58:41.7952343" organization="Thomas Labs" author="Dale Thomas">
     <Comment>https://github.com/dalethomas81/ArfBotOS</Comment>
     <coordinateInfo>
       <fbd>
@@ -1578,7 +1578,7 @@ RESERVED: INT:=46;</xhtml>
                 <string length="80" />
               </type>
               <initialValue>
-                <simpleValue value="'v2.2026.37.0-RobotAnimator-7-gcb5df5e'" />
+                <simpleValue value="'v2.2026.37.1-AlarmHistory-5-g06119e5'" />
               </initialValue>
               <documentation>
                 <xhtml xmlns="http://www.w3.org/1999/xhtml"> git describe --tags --always --dirty