fixed #10143: Matrix 2.0 - Product maintainer accounts changed during upgrade

docs/changelog/7.x.x.txt

@@ -23,6 +23,7 @@
  - Survey editor now keeps survey objects in a scrollable panel to keep buttons always in view.
  - fixed #10198: Cannot drag assets to new positions on page
  - fixed #10190: Matrix 2.0 - Strange characters in "Show Ratings" box
+ - fixed #10143: Matrix 2.0 - Product maintainer accounts changed during upgrade
  - rfe: #10002: User Manager, view User's Profile (perlDreamer Consulting)
  - rfe: #10073: Account system to be able to return XML/JSON (perlDreamer Consulting)
  - Replaced the tax system with a pluggable one. Included are a Generic plugin

lib/WebGUI/Asset/MatrixListing.pm

@@ -312,6 +312,19 @@ sub getEditForm {
             hoverHelp   =>$i18n->get('maintainer description'),
             );
     }
+    else{
+        my $userId;
+        if ($func eq "add"){
+            $userId = $session->user->userId;
+        }
+        else{
+            $userId = $self->get('ownerUserId');
+        }
+        $form->hidden(
+            -name           =>'ownerUserId',
+            -value          =>$userId,
+        );
+    }
     $form->text(        
         -name           =>'version',
         -defaultValue   =>undef,