You can change a target model that supplies shortcuts to your model from the List of Target Models.
You cannot use the Undo feature to cancel a Change Target Model action.
For example, you create a model, Project.pdm, which contains shortcuts to objects in a target model, Library.pdm. A copy of the target model, Library2.pdm, is made, in which different versions of the target objects are developed. You can switch between Library.pdm and Library2.pdm in the List of Target Models.