Sometimes when you add some LonWorks nodes in Vista Workstation under one Xenta Server, and click Edit on the Xenta Server to open Xbuilder, the content of Xbuilder doesn't update, and the ones in XBuilder and Workstation doesn't match.
The Xbuilder failed to update according to Workstation
Right click on the "LON" under the Xenta Server in Xbuilder and click "Refresh network from TAC Vista". It will manually update the content in Xbuilder with Vista Workstation. Then Workstation and Xbuilder will match each other.