diff --git a/BuildContrib/lib/Foswiki/Contrib/Build.pm b/BuildContrib/lib/Foswiki/Contrib/Build.pm
index 89cbc187ce..d6fa176747 100644
--- a/BuildContrib/lib/Foswiki/Contrib/Build.pm
+++ b/BuildContrib/lib/Foswiki/Contrib/Build.pm
@@ -1103,7 +1103,8 @@ sub filter_txt {
             my ( $this, $text ) = @_;
 
             # Replace the version (SVN Rev or wrongly saved number) with rev 1.
-            $text =~ s/^(%META:TOPICINFO{.*version=").*?(".*}%)$/${1}1$2/m;
+            # Item10629: Must preserve version for CompareRevisionAddOnDemoTopic, or nothing to demo
+            $text =~ s/^(%META:TOPICINFO{.*version=").*?(".*}%)$/${1}1$2/m unless $from =~ m/CompareRevisionsAddOnDemoTopic.txt$/;
             $text =~ s/%\$(\w+)%/&_expand($this,$1)/geo;
             return $text;
         }
diff --git a/CompareRevisionsAddOn/data/Sandbox/CompareRevisionsAddOnDemoTopic.txt b/CompareRevisionsAddOn/data/Sandbox/CompareRevisionsAddOnDemoTopic.txt
index 8b55965023..c7e7139234 100644
--- a/CompareRevisionsAddOn/data/Sandbox/CompareRevisionsAddOnDemoTopic.txt
+++ b/CompareRevisionsAddOn/data/Sandbox/CompareRevisionsAddOnDemoTopic.txt
@@ -1,4 +1,4 @@
-%META:TOPICINFO{author="ProjectContributor" date="1298533812" format="1.1" version="1"}%
+%META:TOPICINFO{author="ProjectContributor" date="1298533812" format="1.1" version="2"}%
 ---+ This is the title
 
 Here is a changed paragraph. Lorem Ipsum dolor sit amet, conecteur adipiscing felix elit.