If you are merging models Konstru automatically groups elements that have been added and modified. Added elements will be put into a group called KonstruMergeAdded and changed elements will be part of the KonstruMergeChanged group. All elements which have been identified as a matching pair are additionally placed into a group called KonstruMergeFound. This way you can easily select all modified or added elements in Revit, SAP2000 or ETABS after downloading the merged model.
Konstru also groups all modified elements on download in Revit and CSI products. All modified elements are being grouped in KonstruChanged.
Keep in mind, Konstru Groups are SelectionFilters in Revit.