There's no need to special case Posts in Account/Contributions. The view method referes you to the Thread, and if a user has multiple posts in a thread, it links to the Thread multiple times. Also, this fixes bug #11622.

docs/changelog/7.x.x.txt

@@ -17,6 +17,7 @@
  - fixed #11619: Trash Expired Events not trashing events
  - fixed #11623: Navigation CSS-id
  - fixed #11629: WebGUI Collateral Manager = Error
+ - fixed #11622: Archived CSS entries displayable.
 
 7.9.6
  - new checkbox in the asset manager for clearing the package flag on import

lib/WebGUI/Account/Contributions.pm

@@ -200,12 +200,6 @@ sub www_view {
         my $asset      = WebGUI::Asset->newByDynamicClass( $session, $assetId );
         my $props      = $asset->get;
         $props->{url}  = $asset->getUrl;
-        if (ref $asset eq "WebGUI::Asset::Post") {
-            $asset = $asset->getThread;
-            $props = $asset->get;
-            $props->{className} = "WebGUI::Asset::Post";
-        }
-        
         push(@contribs,$props);
     }
     my $contribsCount  = $p->getRowCount;