How can I save the display of elements after using the Displayset or Isolate tool?
The best method to save certain displayed elements in a model is to use "Named Groups". It is accessed from the Utilities pull down menu. This MicroStation tool works with the Displayset tool. Displayset is a legacy tool name which is used in MicroStation, but the same tool is called "Isolate" in the right click pop up menu in AECOsim. They both do the same thing, but Named Groups will save this display of elements in the design file after it is closed. If you reopen the design file the display will be back to normal, but you would have to open the Named Groups dialog to select your display again and set those elements to display again. The advantage of using Named Groups is that you will not have to select each element that you want to display again. They will already be grouped.. You just need to turn it on. See the attached image.
Also, you can refer to some discussions in Bentley Communities about Displayset and Isolate:http://communities.bentley.com/products/building/building_analysis___design/f/5917/p/95453/278209#278209