You are able to compare the latest revision of an element in the Source Control bank with the current copy of the element in the model.

With the additional System Modeler Merge Export File utility, you can combine two elements or revisions by reviewing each difference between the two items and selecting which variant is included in the final merged file. You can also create a report on the differences between objects, revisions, and export files.

The System Modeler Compare and Merge Tools that is accessed from File, Source Control, and Compare menu item provide these functions. You can also access them from the Compare item on the context menu. Refer to Compare Two Files in the Visual Studio Online Help for more information on how to compare different versions of an element.