To unassign configuration baselines from clients in Configuration Manager 2007, delete the assignment from the configuration baseline properties.
To unassign a configuration baseline from a collection
In the Configuration Manager console, navigate to System Center Configuration Manager / Site Database / Computer Management / Desired Configuration Management / Configuration Baselines.
Right-click the configuration baseline that you want to unassign, and click Properties.
In the Assignments tab, select the assignment you want to remove and click Delete.
Note For more information about the options in the configuration baseline properties dialog box, see Configuration Baseline Properties.