Also, @HannesFoth, following Robert's recommendations and as you configure the UN to support your containment (Association Role and the corresponding Association Rules) pay attention to the Deletion Semantics and Split Content Policy of your asset type(s) acting as Container.
Say you have a linear feature that contains either another linear feature or a non-spatial edge object. And you split the feature. Then,
If you configure Split Content as True:
- The longer segment of the split feature will be the original feature (shortened). Therefore, containing the original content and using the same containment association(s).
- The shorter segment, however, is a new feature with attribute values copied from the original feature (as long as the Split Policy of its coded value domain(s) are configured as Duplicate). But also, this shorter segment will contain a copy of the original content with the corresponding new association record(s)
If, on the other, the Split Content of the Association Role is set to False:
- The feature split behaves the same: longer-shorter/original-newcopy.
- But the original content now is shared between the two splits; i.e., a new containment association record is created between the original content and the new split segment.
Now say that you chose Split Content to be True. Then, if you were to merge the two segments back... you need to take into consideration your choice of the Deletion Semantics of the linear asset type acting as container. Since one of the segments will be deleted during the merge, Restricted will prevent you from doing so without first removing the association (whether deleting the contents or deleting the association leaving behind the content). If this is not the workflow that satisfies your editing requirements, you may want to consider configuring the Deletion Semantics as Cascade.
In essence, I am just pointing out that some configurations act together, and you need to be aware of the effects of one and the other with respect to your workflows.