Showing assignments without data entries?

Summary:

Using subject areas to create an analysis, we have issue showing assignments without data entries.

Content (required):

We are creating a number of analyses using the OTBI subject areas, but often find that not all assignments are shown in the report, if they have no data entries, but we want to see these as well in the analysis.

Example: We use compensation element entries for registering seniority information. When a new hire is created, seniority information can be registered in a number of fields in the seniority element. However it is not mandatory to type in any seniority information meaning that a number of employees will have no information typed in any fields of this specific element.