Article ID: 973872 - View products that this article applies to.
In Microsoft Office SharePoint Server 2007, you create a custom scope. A rule of the scope contains a property whose value is based on the value of a multiple value lookup field. When you run a search in the scope, no result is returned for the multiple value lookup field.
To resolve this problem, apply the following two updates:
(http://support.microsoft.com/kb/973409/ )Description of the Office SharePoint Server 2007 Cumulative Update Server Hotfix Package (Coreserver.msp): September 9, 2009
(http://support.microsoft.com/kb/973410/ )Description of the Windows SharePoint Services 3.0 Cumulative Update Server Hotfix Package (Sts.msp): August 25, 2009
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.