Mac OS X Lion Software Update service does not reflect 10.7.1 update

Question

Hi all,
I recently upgraded my Mac OS X 10.6 Snow Leopard server to 10.7.
Everything went ok, and the server tools are installed and working.
Last week, Apple released the 10.7.1 update, but this update is not reflected in the Lion Server's Software Update service.
Every time I start the catalog sync (either in the Server Admin app, or through Terminal), the sync process completes correctly without any errors, but the latest 10.7.1 update is not listed in the available updates.
Did I miss something there ?
Thanks in advance for your help,

Answer 1

Additional info:
I followed KBase art HT4771, and made the following changes:
1. Stopped the Software Update Service and quit Server Admin app
2. Updated /etc/swupd/swupd.plist to begin hosting OS X Lion software updates by typing the following Terminal command:
sudo /usr/libexec/PlistBuddy -c 'add :otherCatalogs:2 string index-lion-snowleopard-leopard.merged-1.sucatalog' /etc/swupd/swupd.plist
3. Updated /etc/swupd/swupd.conf to allow OS X Lion computers to receive updates as follows:
     "RewriteCond %{HTTP_USER_AGENT} Darwin/11
     RewriteRule ^/index\.sucatalog$ /index-leopard-snowleopard.merged-1.sucatalog"
became
     "RewriteCond %{HTTP_USER_AGENT} Darwin/11
     RewriteRule ^/index\.sucatalog$ /index-lion-snowleopard-leopard.merged-1.sucatalog"
After completing this and restarted the Software Update Service, the Server's Software Update Service could find all updates, including Mac OS X 10.7.1 and more Lion updates (Multi-lingual voices, Server Essentials, ... ).
The issue is now that the client computers cannot find the Software Update server, though it is properly connected, regardless the selected catalog in /Library/Preferences/com.apple.SoftwareUpdate.
I am now considering to erase all updates from server, delete all config files, and restart service from scratch.
Any other idea before I start the big deletion ?