One awkward area in AutoCAD Plant 3D is change service and other line group information. At first glance, it doesn’t seem like there is a way to do that.
The trick is the data manager views. The data manager can be changed to display by area or by object type. In 2012, you have to go through Project Setup to change the data manager view.
So in 2012 go to PROJECTSETUP, Plant 3D DWG Settings –> Data Manager Configuration and click Area (drawing property).
Then in the Data Manager, expand the Area node, and select the Pipe Line node which will display a list of all of the line groups. Finally, select the service field and pick your new service. The change will be applied to all the components within the line group.
So, while it’s pretty simple to do, you have to know where to look…and now you do!