Kehrer, TimoKelter, Udo2023-03-162023-03-162014https://dl.gi.de/handle/20.500.12116/40866UML models contain various collections of ordered model elements. For example, a parameter list of an operation is an ordered set of parameters. The UML meta-model represents such orders by multi-valued properties having the modifier “ordered”. A total of 43 properties of UML 2.4.1 are ordered. We have analyzed whether the order is conceptually relevant for model versioning (15 cases) or not (28 cases), how modifications of an order should be displayed in differences and how positions can be specified in edit scripts. On this basis, we propose a modified differencing pipeline of the SiLift model versioning framework which is able to detect ordering changes.enText/Journal Article0720-8928