AT:
- given:
	- I create single reports A and B
- I create a combined report X containing A and B
 
- when:
	- I update report A such that it does not fit according the properties of a report that can be added to a combined report (e.g. change it to a single number report)
 
- then:
	- The evaluation of X contains only B
- The retrieval of X contains only B as an embedded report