The Update Labels utility updates item labels in drawings where the properties of the items were changed using automation. Without this utility, the labels on these items are not updated with the new information, and they display the old values in the drawing.
Do the following to update labels in a drawing:
Open a drawing in Smart P&ID.
Click Tools > Custom Commands.
On the Custom Command dialog box, browse to ..\SmartPlant\P&ID Workstation\bin and double-click UpdateLabelsCmd.dll.
This utility will not update the label with modifications made in Catalog Manager. If modifications were made to the label in Catalog Manager, each instance of the label must be replaced in the drawings. Use the Edit > Replace command to find and correct these instances.