Dependent DFF Value Problem in Analytics

Summary

I can not see null values for dependent dff value in report

Content

Hi Dear All,

I use two dff value in purchase order. Those are Member Type and Member. Member Type is independent value but Member dependent on Member Type. In additional they are not required.

I created a analytics from Purchasing Real Time. I added Member Type its okey. But when i added Member. I suppose system start grouping process between member and member type.  

In report, There must be null values for Member type and member. But When i added system filtered automaticly i couldnt see any null value.