Not excluding records with null values

Hello,

I am using Wrike Analyze to pull a pivot table of tasks that have a custom field filled out. But I have noticed that it will exclude some of the task records (specifically under pulling in the correlating project name) when that row is turned on in the pivot settings. So, if the task does not have a correlating project, it will exclude that record from the pivot. What I would like to do is have the project name field be blank so that the record stays. I specifically want to know if it is correlated to a project or not. I do not want to use the Folder/Project field. 

Is it possible to update the advanced settings for that field to include null values? I tried updating the advanced settings for the project name field to what I have below, but it did not include the additional records that are included if I turn that field off.  Thanks for your help!

Code I updated (what I added is in bold)

{
 "explicit": false,
 "multiSelection": true,
 "all": true,
 "includeNull": true
}