http://blogs.msdn.com/sowmyancs/archive/2009/05/31/issue-with-upgrading-the-web-part-pages-created-from-the-custom-web-part-page-template-from-sps-2003-and-moss-2007.aspxOnce I had worked with a case in which customer has created a custom web part page template in SPS 2003 as per the following MSDN article http://msdn.microsoft.com/en-us/library/dd583147.aspx . When customer upgraded from SPS 2003 to MOSS 2007 he founden-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/sowmyancs/archive/2009/05/31/issue-with-upgrading-the-web-part-pages-created-from-the-custom-web-part-page-template-from-sps-2003-and-moss-2007.aspx#9670990Sun, 31 May 2009 22:00:57 GMT91d46819-8472-40ad-a661-2c78acb4018c:9670990Issue with upgrading the web part pages created from the custom web part page template from SPS 2003 and MOSS 2007 | Microsoft Share Point<p>PingBack from <a rel="nofollow" target="_new" href="http://microsoft-sharepoint.simplynetdev.com/issue-with-upgrading-the-web-part-pages-created-from-the-custom-web-part-page-template-from-sps-2003-and-moss-2007/">http://microsoft-sharepoint.simplynetdev.com/issue-with-upgrading-the-web-part-pages-created-from-the-custom-web-part-page-template-from-sps-2003-and-moss-2007/</a></p>